Problème package re

Version imprimable

Problème package re

Bonjour à tous les amis,

Dans le cadre d'un programme informatique, je souhaiterais récupérer d'une très longue chaîne de caractères (code html d'une page web) certaines informations qui me seraient précieuses.

Dans cette page web, quatre "tableaux" de ce type sont inclus :

Code:

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<div class="fcsttabf" id="div_wgfcst2">       
            <script language="JavaScript" type="text/javascript">
                //<![CDATA[        
        var wg_fcst_tab_data_2 = {"id_spot":802733,"id_user":1389136,"nickname":"other user's custom spot","custom_onlypro":1,"spot":"Canada - Coaticook","lat":45.1335,"lon":-71.8228,"alt":290,"id_model":38,"model":"usnmm","model_alt":367,"levels":1,"sst":null,"sunrise":"07:10","sunset":"16:50","tz":"EST","tzutc":"(UTC-5)","utc_offset":-5,"tzid":"Canada\/Eastern","tides":0,"md5chk":"98e9facefbacac0733d504b8638cf836","fcst":{"38":{"initstamp":1549022400,"TMP":[-18.5,-18.7,-18,-17,-15.9,-15.3,-14.6,-14.2,-14.1,-14.7,-16,-16.3,-16.7,-17,-17.1,-16.9,-16.7,-16.4,-16.6,-16.5,-16.5,-16.3,-15.1,-14,-13.6,-13.3,-13.1,-11.9,-10.3,-9.2,-7.8,-7.6,-7.3,-7.4,-9.3,-10,-11,-9.6,-11.3,-13.2,-14.3,-15.3,-16.6,-17.8,-18.7,-19.2,-20,-19.5,-19.6],"TCDC":[null,14,0,0,0,0,25,0,0,0,0,0,0,0,1,0,0,8,0,1,2,38,100,100,100,100,100,100,100,100,100,100,100,98,60,14,97,19,29,4,4,79,20,6,9,73,80,29,90],"HCDC":[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,13,39,100,82,33,21,87,53,78,0,1,30,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"MCDC":[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,18,100,100,100,100,100,100,66,35,3,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,14,19,1],"LCDC":[0,14,0,0,0,0,25,0,0,0,0,0,0,0,1,0,0,8,0,0,1,14,100,100,100,100,100,100,100,100,100,100,100,98,60,14,97,19,29,4,4,79,20,6,9,73,78,11,89],"RH":[75,75,74,73,72,71,72,71,69,67,65,63,63,63,65,65,64,70,72,71,75,79,78,78,74,71,83,82,82,83,84,85,88,84,83,84,83,88,85,73,73,81,91,99,100,99,100,92,93],"GUST":[26.1,27.8,27.8,28.6,28.5,28.7,27.3,26.4,24.1,24.7,23.8,25.7,25.4,22.7,21.8,22.3,21.7,22.3,22.2,21.2,20.5,19.2,20.7,20.7,22.2,25.1,27.6,29.6,31.2,30.2,28.7,26.8,25.8,28.3,24.7,24.4,23.5,23.5,20.7,14.9,12.1,10.2,6.9,2.7,2.8,2.8,2.6,1.8,3],"SLP":[1024,1025,1024,1025,1025,1024,1023,1024,1024,1024,1024,1024,1025,1025,1024,1024,1024,1023,1023,1022,1021,1020,1018,1017,1017,1016,1014,1012,1011,1010,1008,1008,1008,1010,1011,1013,1014,1016,1016,1017,1018,1019,1021,1021,1022,1022,1022,1022,1023],"APCP1":[null,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0.1,0.3,0.1,0.1,0.1,0.1,0.1,0.1,0,0,0,0.1,0,0,0,0,0,0,0,0,0,0,0],"WINDSPD":[10.1,10.6,11.5,12,12.4,12.7,12,12.1,11.9,10.7,8.6,8.4,7.7,6.8,6.4,6.3,5.9,6.5,6.5,6.7,7.1,7.1,7.5,8,8.5,8.9,10.5,11.2,11.5,11.3,11.5,11.6,11.5,15.1,11.9,10.2,7,10.4,9.1,5.8,3.7,3.1,2.7,2.8,2.7,3,2.8,2.6,3.5],"WINDDIR":[247,248,253,252,251,249,247,246,243,244,239,240,240,235,231,225,214,214,213,205,204,201,196,193,197,195,190,197,214,230,245,252,264,285,285,284,273,284,309,309,312,315,254,230,206,182,164,137,151],"SMERN":["11","11","11","11","11","11","11","11","11","11","11","11","11","10","10","10","10","10","9","9","9","9","9","9","9","9","8","9","10","10","11","11","12","13","13","13","12","13","14","14","14","14","11","10","9","8","7","6","7"],"TMPE":[-18,-18.3,-17.5,-16.6,-15.6,-14.9,-14.2,-13.8,-13.7,-14.3,-15.4,-15.7,-16.2,-16.4,-16.5,-16.3,-16.1,-15.9,-16.1,-16.1,-16.1,-15.9,-14.6,-13.5,-13.1,-12.7,-12.5,-11.3,-9.7,-8.6,-7.2,-7,-6.7,-6.8,-8.8,-9.5,-10.5,-9.1,-10.8,-12.7,-13.7,-14.8,-16,-17.2,-18.1,-18.5,-19.4,-18.9,-19],"hr_weekday":[5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,0,0,0,0,0,0,0,0],"hr_h":["07","08","09","10","11","12","13","14","15","16","17","18","19","20","21","22","23","00","01","02","03","04","05","06","07","08","09","10","11","12","13","14","15","16","17","18","19","20","21","22","23","00","01","02","03","04","05","06","07"],"hr_d":["01","01","01","01","01","01","01","01","01","01","01","01","01","01","01","01","01","02","02","02","02","02","02","02","02","02","02","02","02","02","02","02","02","02","02","02","02","02","02","02","02","03","03","03","03","03","03","03","03"],"hours":[0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48],"vars":["TMP","TCDC","HCDC","MCDC","LCDC","RH","GUST","SLP","APCP1","WINDSPD","WINDDIR","SMERN","TMPE"],"initdate":"2019-02-01 12:00:00","init_d":"01.02.2019","init_dm":"01.02.","init_h":"12","initstr":"2019020112","model_name":"HRW 4 km","model_longname":"HRW 4 km (US)","id_model":38,"update_last":"2019-02-01 17:19:03","update_next":"2019-02-02 05:25:00","img_param":[],"img_var_map":{"WINDSPD":"windspd","MWINDSPD":"windspd","SMER":"windspd","SMERN":"windspd","WINDDIR":"windspd","TMP":"t2m","TMPE":"t2m","APCP1":"tcdc_apcp1","APCP1s":"tcdc_apcp1","HCDC":"tcdc_apcp1","MCDC":"tcdc_apcp1","LCDC":"tcdc_apcp1","CDC":"tcdc_apcp1","TCDC":"tcdc_apcp1","SLP":"press"}}}};
var wgopts_2 = {"id_user":0,"wj":"knots","tj":"c","waj":"m","odh":3,"doh":22,"wrap":40,"fhours":240,"limit1":10.63,"limit2":15.57,"limit3":19.41,"tlimit":10,"vt":1,"params":["WINDSPD","GUST","SMER","TMPE","CDC","APCP1","RATING"],"first_row_mwinfo":true,"path_lng":"\/fr\/"};
wgopts_2.lang = WgLang;
WgFcst.showForecast(wg_fcst_tab_data_2,wgopts_2);
            //]]>
            </script>
        </div>

De ce tableau, je souhaite récupérer les listes "APCP1" et "PCPT" entre autres en tant que listes.

J'ai commencé à travailler avec le module re afin de chercher dans le texte les informations mentionnées. Le code suit :

Code:

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import re
code = 'blab,"id_user":1389136,"nickname":"other users custom spot","id_spot":123546,"TMP":[-18.7,-16.1,-13.6,-13.8,-16.3,-15.7,-15.6,-17,-15.2,-12.3,-10.2,-9.4,-9.9,-12.7,-12.9,-14.5,-12.9,-10,-7,-4.2,-4,-2.9,-1.9,-1.5,-0,1.2,1.8,2.4,2.3]'
# La variable code sert à tester le programme, à terme il faudrait que ça soit la page web entière
 
m=re.search(r'"id_user":(\w+)', code)
result=m.groups()
print(result)

Pour "id_user" ou "id_spot", je récupère bien ce qui suit jusqu'à la virgule. Cependant, je ne comprends pas pourquoi si je change "id_user" par "nickname" par exemple ou "TMP", ça m'affiche un message d'erreur que je n'arrive pas à résoudre malgré mes différentes tentatives.

Mes questions sont les suivantes :

- le package re est-il le bon à utiliser ?
- auriez-vous une idée de comment palier à mes problèmes ?

Merci d'avance à toutes les personnes qui passeront sur ce sujet.

Bonne journée, UL

Bonjour,

C'est normal que "nickname" ne marche pas avec \w+ puisque le texte qui va avec contient en plus une apostrophe et plusieurs espaces.

Essaie ça:

Code:

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import re
 
code = """<div class="fcsttabf" id="div_wgfcst2">       
            <script language="JavaScript" type="text/javascript">
                //<![CDATA[        
        var wg_fcst_tab_data_2 = {"id_spot":802733,"id_user":1389136,"nickname":"other user's custom spot","custom_onlypro":1,"spot":"Canada - Coaticook","lat":45.1335,"lon":-71.8228,"alt":290,"id_model":38,"model":"usnmm","model_alt":367,"levels":1,"sst":null,"sunrise":"07:10","sunset":"16:50","tz":"EST","tzutc":"(UTC-5)","utc_offset":-5,"tzid":"Canada\/Eastern","tides":0,"md5chk":"98e9facefbacac0733d504b8638cf836","fcst":{"38":{"initstamp":1549022400,"TMP":[-18.5,-18.7,-18,-17,-15.9,-15.3,-14.6,-14.2,-14.1,-14.7,-16,-16.3,-16.7,-17,-17.1,-16.9,-16.7,-16.4,-16.6,-16.5,-16.5,-16.3,-15.1,-14,-13.6,-13.3,-13.1,-11.9,-10.3,-9.2,-7.8,-7.6,-7.3,-7.4,-9.3,-10,-11,-9.6,-11.3,-13.2,-14.3,-15.3,-16.6,-17.8,-18.7,-19.2,-20,-19.5,-19.6],"TCDC":[null,14,0,0,0,0,25,0,0,0,0,0,0,0,1,0,0,8,0,1,2,38,100,100,100,100,100,100,100,100,100,100,100,98,60,14,97,19,29,4,4,79,20,6,9,73,80,29,90],"HCDC":[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,13,39,100,82,33,21,87,53,78,0,1,30,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"MCDC":[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,18,100,100,100,100,100,100,66,35,3,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,14,19,1],"LCDC":[0,14,0,0,0,0,25,0,0,0,0,0,0,0,1,0,0,8,0,0,1,14,100,100,100,100,100,100,100,100,100,100,100,98,60,14,97,19,29,4,4,79,20,6,9,73,78,11,89],"RH":[75,75,74,73,72,71,72,71,69,67,65,63,63,63,65,65,64,70,72,71,75,79,78,78,74,71,83,82,82,83,84,85,88,84,83,84,83,88,85,73,73,81,91,99,100,99,100,92,93],"GUST":[26.1,27.8,27.8,28.6,28.5,28.7,27.3,26.4,24.1,24.7,23.8,25.7,25.4,22.7,21.8,22.3,21.7,22.3,22.2,21.2,20.5,19.2,20.7,20.7,22.2,25.1,27.6,29.6,31.2,30.2,28.7,26.8,25.8,28.3,24.7,24.4,23.5,23.5,20.7,14.9,12.1,10.2,6.9,2.7,2.8,2.8,2.6,1.8,3],"SLP":[1024,1025,1024,1025,1025,1024,1023,1024,1024,1024,1024,1024,1025,1025,1024,1024,1024,1023,1023,1022,1021,1020,1018,1017,1017,1016,1014,1012,1011,1010,1008,1008,1008,1010,1011,1013,1014,1016,1016,1017,1018,1019,1021,1021,1022,1022,1022,1022,1023],"APCP1":[null,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0.1,0.3,0.1,0.1,0.1,0.1,0.1,0.1,0,0,0,0.1,0,0,0,0,0,0,0,0,0,0,0],"WINDSPD":[10.1,10.6,11.5,12,12.4,12.7,12,12.1,11.9,10.7,8.6,8.4,7.7,6.8,6.4,6.3,5.9,6.5,6.5,6.7,7.1,7.1,7.5,8,8.5,8.9,10.5,11.2,11.5,11.3,11.5,11.6,11.5,15.1,11.9,10.2,7,10.4,9.1,5.8,3.7,3.1,2.7,2.8,2.7,3,2.8,2.6,3.5],"WINDDIR":[247,248,253,252,251,249,247,246,243,244,239,240,240,235,231,225,214,214,213,205,204,201,196,193,197,195,190,197,214,230,245,252,264,285,285,284,273,284,309,309,312,315,254,230,206,182,164,137,151],"SMERN":["11","11","11","11","11","11","11","11","11","11","11","11","11","10","10","10","10","10","9","9","9","9","9","9","9","9","8","9","10","10","11","11","12","13","13","13","12","13","14","14","14","14","11","10","9","8","7","6","7"],"TMPE":[-18,-18.3,-17.5,-16.6,-15.6,-14.9,-14.2,-13.8,-13.7,-14.3,-15.4,-15.7,-16.2,-16.4,-16.5,-16.3,-16.1,-15.9,-16.1,-16.1,-16.1,-15.9,-14.6,-13.5,-13.1,-12.7,-12.5,-11.3,-9.7,-8.6,-7.2,-7,-6.7,-6.8,-8.8,-9.5,-10.5,-9.1,-10.8,-12.7,-13.7,-14.8,-16,-17.2,-18.1,-18.5,-19.4,-18.9,-19],"hr_weekday":[5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,0,0,0,0,0,0,0,0],"hr_h":["07","08","09","10","11","12","13","14","15","16","17","18","19","20","21","22","23","00","01","02","03","04","05","06","07","08","09","10","11","12","13","14","15","16","17","18","19","20","21","22","23","00","01","02","03","04","05","06","07"],"hr_d":["01","01","01","01","01","01","01","01","01","01","01","01","01","01","01","01","01","02","02","02","02","02","02","02","02","02","02","02","02","02","02","02","02","02","02","02","02","02","02","02","02","03","03","03","03","03","03","03","03"],"hours":[0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48],"vars":["TMP","TCDC","HCDC","MCDC","LCDC","RH","GUST","SLP","APCP1","WINDSPD","WINDDIR","SMERN","TMPE"],"initdate":"2019-02-01 12:00:00","init_d":"01.02.2019","init_dm":"01.02.","init_h":"12","initstr":"2019020112","model_name":"HRW 4 km","model_longname":"HRW 4 km (US)","id_model":38,"update_last":"2019-02-01 17:19:03","update_next":"2019-02-02 05:25:00","img_param":[],"img_var_map":{"WINDSPD":"windspd","MWINDSPD":"windspd","SMER":"windspd","SMERN":"windspd","WINDDIR":"windspd","TMP":"t2m","TMPE":"t2m","APCP1":"tcdc_apcp1","APCP1s":"tcdc_apcp1","HCDC":"tcdc_apcp1","MCDC":"tcdc_apcp1","LCDC":"tcdc_apcp1","CDC":"tcdc_apcp1","TCDC":"tcdc_apcp1","SLP":"press"}}}};
var wgopts_2 = {"id_user":0,"wj":"knots","tj":"c","waj":"m","odh":3,"doh":22,"wrap":40,"fhours":240,"limit1":10.63,"limit2":15.57,"limit3":19.41,"tlimit":10,"vt":1,"params":["WINDSPD","GUST","SMER","TMPE","CDC","APCP1","RATING"],"first_row_mwinfo":true,"path_lng":"\/fr\/"};
wgopts_2.lang = WgLang;
WgFcst.showForecast(wg_fcst_tab_data_2,wgopts_2);
            //]]>
            </script>
        </div>"""
 
motif = r'"nickname":"([\w \']+)"'
 
m = re.search(motif, code)
if m==None:
    print("Pas trouvé!")
else:    
    print(m.groups(0)[0])

Ce qui affiche bien:

Citation:

other user's custom spot

Salut.

Une autre solution simple serait de récupérer le contenu entier de la variable wg_fcst_tab_data_2 et donner ça à manger à json.

Quelque chose comme.
Code:

1 2 3 4 5 6 7 import json m = re.search('var wg_fcst_tab_data_2 = ({.+?});', code) if m : dico = json.loads(m.group(1)) print("id spot =>", dico['id_spot']) print("id user =>", dico['id_user']) print("name =>", dico['nickname'])

04/02/2019, 19h26
ULaval

Bonjour et merci à tous les deux pour vos réponses.

Effectivement, les deux solutions marchent très efficacement.

Cependant, un de mes objectifs principaux est de récupérer une liste du texte (comme "TMP" par exemple) afin de la transformer en une liste dans python pour pouvoir travailler dessus, et je n'y arrive toujours pas. De plus, le fait qu'en fin de texte, l'on retrouve ces mêmes noms de liste ("TMP", etc.) avec du texte derrière complique la chose car je ne souhaite pas exploiter cette information...

Auriez-vous une idée de comment faire ?

Merci d'avance à tous pour votre aide et bonne fin de journée !
04/02/2019, 21h46
bistouille

Salut.

json fait ce travail pour toi.

Code:

print(dico['fcst']['38']['TMP'])

Comme des TMP, il y en a plusieurs, s'il se situe dans une autre variable js, bah il suffit de faire pareil en chargant le contenu de la variable dans une autre instance de json.
04/02/2019, 22h13
ULaval

Salut bistouille,

Ça marche parfaitement.

Merci énormément et bonne continuation,
UL

En fait, j'ai désormais un autre problème.

Lorsque je donne la page internet entière à json, il me renvoie une erreur :

Code:

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Traceback (most recent call last):
  File "C:\Users\xxx\Documents\Tests\texte.py", line 22, in <module>
    dico = json.loads(m.group(1))
  File "C:\Users\xxx\AppData\Local\Programs\Python\Python37\lib\json\__init__.py", line 348, in loads
    return _default_decoder.decode(s)
  File "C:\Users\xxx\AppData\Local\Programs\Python\Python37\lib\json\decoder.py", line 337, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "C:\Users\xxx\AppData\Local\Programs\Python\Python37\lib\json\decoder.py", line 353, in raw_decode
    obj, end = self.scan_once(s, idx)
json.decoder.JSONDecodeError: Invalid \escape: line 1 column 59 (char 58)

Après quelques recherches, il apparaît que le problème vient du fait qu'il y ait notamment des \n et autres \' dans le fichier, que je ne peux modifier...
J'ai donc cherché à modifier le code fourni en :

Code:

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json_str = json.loads(code, strict=False)
m = re.search(r'''var wg_fcst_tab_data_2 = ({.+?});''', json_str)

Mais cela me renvoie alors

Code:

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Traceback (most recent call last):
  File "C:\Users\xxx\Documents\Tests\texte.py", line 19, in <module>
    json_str = json.loads(code, strict=False)
  File "C:\Users\xxx\AppData\Local\Programs\Python\Python37\lib\json\__init__.py", line 361, in loads
    return cls(**kw).decode(s)
  File "C:\Users\xxx\AppData\Local\Programs\Python\Python37\lib\json\decoder.py", line 337, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "C:\Users\xxx\AppData\Local\Programs\Python\Python37\lib\json\decoder.py", line 355, in raw_decode
    raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)

Je n'arrive pas à résoudre ces erreurs...

Merci d'avance, UL

EDIT : En fait, après plusieurs tests, ce ne sont pas les \n et autres qui posent problème... Ça semble venir directement de mon fichier texte contenant le code mais je ne parviens pas à savoir d'où...

04/02/2019, 23h13
bistouille

Que contient m.group(1) ?

C'est dans cette valeur qu'il faut voir ce qui cloche, et éventuellement supprimer ce qui pose problème.

Alors voici m.group(1) avec le document html directement :

Code:

'{"id_spot":802733,"id_user":1389136,"nickname":"other user\\\'s custom spot","custom_onlypro":1,"spot":"Canada - Coaticook","lat":45.1335,"lon":-71.8228,"alt":290,"id_model":38,"model":"usnmm","model_alt":367,"levels":1,"sst":null,"sunrise":"07:07","sunset":"16:55","tz":"EST","tzutc":"(UTC-5)","utc_offset":-5,"tzid":"Canada\\\\/Eastern","tides":0,"md5chk":"46dd3b300fb9e161427316f83ec4afa5","fcst":{"38":{"initstamp":1549281600,"TMP":[1.8,1.9,1.7,1.5,1.2,1.3,1.5,1.6,1.5,1.6,1.4,2.4,2.7,3,3,2.9,3.1,3.3,3.5,3.4,3.5,3.7,3.7,3.8,3.8,3.6,3.6,3.7,3.7,3.4,1.4,0.1,-1.8,-4.2,-7.2,-8.1,-8.6,-8.6,-9.3,-10.5,-11.2,-11.8,-12.3,-12.7,-13.2,-13.7,-14.2,-14.3,-14.6],"TCDC":[null,100,100,100,100,100,57,100,100,100,100,85,36,100,100,100,100,100,29,26,100,100,100,100,93,27,47,93,100,100,100,100,31,100,100,100,100,100,99,74,47,44,27,31,27,22,16,10,21],"HCDC":[0,0,0,0,0,1,1,0,0,0,4,2,8,100,100,100,100,100,11,1,0,6,95,44,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,9,19,0,0,0,0,0,0,0],"MCDC":[0,0,0,0,0,0,0,24,6,7,13,0,0,25,100,100,100,78,17,7,100,100,100,100,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"LCDC":[0,100,100,100,100,100,56,100,100,100,100,84,31,22,74,28,6,6,6,20,3,100,100,100,93,27,47,93,100,100,100,100,31,100,100,100,100,100,99,74,42,30,27,31,27,22,16,10,21],"RH":[100,98,99,99,99,99,97,98,99,99,100,99,99,94,98,99,99,98,99,97,96,94,94,97,98,99,99,99,99,99,99,92,85,88,89,87,88,89,86,85,84,84,84,83,82,82,81,80,81],"GUST":[9.3,13.8,11.8,9.3,6.2,6.1,7.4,3.5,0.6,1.9,2.6,5.5,7.3,9.8,12.2,17.3,21.1,23.7,26,29.7,31.1,36.9,32.4,38.7,34.1,29.3,26.8,26.6,24.9,25.1,27.9,30.3,34.3,29.5,26.2,26.4,22.9,20.8,20.3,20.2,19.7,18.5,16.6,13.7,12.2,10.3,6.7,5.1,3.5],"SLP":[1014,1016,1014,1015,1015,1015,1013,1014,1014,1014,1014,1013,1013,1013,1012,1011,1010,1009,1008,1007,1006,1005,1004,1003,1004,1004,1003,1003,1004,1004,1006,1007,1009,1011,1014,1016,1018,1019,1020,1022,1023,1023,1024,1024,1025,1026,1026,1028,1028],"APCP1":[null,0.5,0.9,0.3,0.2,0.1,0.1,0.1,0.3,0.2,0.1,0.1,0,0,0,0,0,0,0,0,0,0,0.1,1.1,0.8,0.2,0.1,0.1,0.1,0.1,0.9,0.2,0.1,0,0.1,0.2,0.1,0.1,0.1,0,0,0,0,0,0,0,0,0,0],"WINDSPD":[5.2,3.2,2.7,2.1,1.9,2.9,2.5,0.9,0.4,2.2,3,4.1,4.6,5.8,7.3,8.5,9.3,10.3,12.2,12.8,13.1,13.4,11.9,13.8,12.6,10.8,9.5,8.7,8.7,8.8,14,13.9,15.6,14.3,14.3,13.3,12,11.9,12.2,11.1,10,8.9,7.9,7.3,6.8,6,4.3,3.8,2.8],"WINDDIR":[231,236,273,290,231,192,196,236,152,131,141,152,155,154,152,151,154,163,166,164,166,169,167,182,187,189,190,196,206,228,267,259,254,259,272,276,283,297,303,302,303,306,310,314,318,317,328,320,353],"SMERN":["10","10","12","13","10","9","9","10","7","6","6","7","7","7","7","7","7","7","7","7","7","8","7","8","8","8","8","9","9","10","12","12","11","12","12","12","13","13","13","13","13","14","14","14","14","14","15","14","0"],"TMPE":[2.2,2.3,2.2,2,1.8,1.7,1.8,1.8,1.9,2,1.6,2.5,2.7,2.7,2.6,2.8,3.1,3.5,3.7,3.7,3.8,4.1,4.1,4.3,4.2,4.1,4.1,4.1,4.2,3.9,2,0.7,-1.2,-3.6,-6.5,-7.5,-8,-8.1,-8.8,-9.9,-10.7,-11.3,-11.8,-12.2,-12.7,-13.2,-13.7,-13.8,-14.1],"hr_weekday":[1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,3,3,3,3,3,3,3,3],"hr_h":["07","08","09","10","11","12","13","14","15","16","17","18","19","20","21","22","23","00","01","02","03","04","05","06","07","08","09","10","11","12","13","14","15","16","17","18","19","20","21","22","23","00","01","02","03","04","05","06","07"],"hr_d":["04","04","04","04","04","04","04","04","04","04","04","04","04","04","04","04","04","05","05","05","05","05","05","05","05","05","05","05","05","05","05","05","05","05","05","05","05","05","05","05","05","06","06","06","06","06","06","06","06"],"hours":[0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48],"vars":["TMP","TCDC","HCDC","MCDC","LCDC","RH","GUST","SLP","APCP1","WINDSPD","WINDDIR","SMERN","TMPE"],"initdate":"2019-02-04 12:00:00","init_d":"04.02.2019","init_dm":"04.02.","init_h":"12","initstr":"2019020412","model_name":"HRW 4 km","model_longname":"HRW 4 km (US)","id_model":38,"update_last":"2019-02-04 17:19:03","update_next":"2019-02-05 05:25:00","img_param":[],"img_var_map":{"WINDSPD":"windspd","MWINDSPD":"windspd","SMER":"windspd","SMERN":"windspd","WINDDIR":"windspd","TMP":"t2m","TMPE":"t2m","APCP1":"tcdc_apcp1","APCP1s":"tcdc_apcp1","HCDC":"tcdc_apcp1","MCDC":"tcdc_apcp1","LCDC":"tcdc_apcp1","CDC":"tcdc_apcp1","TCDC":"tcdc_apcp1","SLP":"press"}}}}'

Et avec le code collé directement dans le programme :

Code:

'{"id_spot":802733,"id_user":1389136,"nickname":"other user\'s custom spot","custom_onlypro":1,"spot":"Canada - Coaticook","lat":45.1335,"lon":-71.8228,"alt":290,"id_model":38,"model":"usnmm","model_alt":367,"levels":1,"sst":null,"sunrise":"07:10","sunset":"16:50","tz":"EST","tzutc":"(UTC-5)","utc_offset":-5,"tzid":"Canada\\/Eastern","tides":0,"md5chk":"98e9facefbacac0733d504b8638cf836","fcst":{"38":{"initstamp":1549022400,"TMP":[-18.5,-18.7,-18,-17,-15.9,-15.3,-14.6,-14.2,-14.1,-14.7,-16,-16.3,-16.7,-17,-17.1,-16.9,-16.7,-16.4,-16.6,-16.5,-16.5,-16.3,-15.1,-14,-13.6,-13.3,-13.1,-11.9,-10.3,-9.2,-7.8,-7.6,-7.3,-7.4,-9.3,-10,-11,-9.6,-11.3,-13.2,-14.3,-15.3,-16.6,-17.8,-18.7,-19.2,-20,-19.5,-19.6],"TCDC":[null,14,0,0,0,0,25,0,0,0,0,0,0,0,1,0,0,8,0,1,2,38,100,100,100,100,100,100,100,100,100,100,100,98,60,14,97,19,29,4,4,79,20,6,9,73,80,29,90],"HCDC":[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,13,39,100,82,33,21,87,53,78,0,1,30,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"MCDC":[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,18,100,100,100,100,100,100,66,35,3,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,14,19,1],"LCDC":[0,14,0,0,0,0,25,0,0,0,0,0,0,0,1,0,0,8,0,0,1,14,100,100,100,100,100,100,100,100,100,100,100,98,60,14,97,19,29,4,4,79,20,6,9,73,78,11,89],"RH":[75,75,74,73,72,71,72,71,69,67,65,63,63,63,65,65,64,70,72,71,75,79,78,78,74,71,83,82,82,83,84,85,88,84,83,84,83,88,85,73,73,81,91,99,100,99,100,92,93],"GUST":[26.1,27.8,27.8,28.6,28.5,28.7,27.3,26.4,24.1,24.7,23.8,25.7,25.4,22.7,21.8,22.3,21.7,22.3,22.2,21.2,20.5,19.2,20.7,20.7,22.2,25.1,27.6,29.6,31.2,30.2,28.7,26.8,25.8,28.3,24.7,24.4,23.5,23.5,20.7,14.9,12.1,10.2,6.9,2.7,2.8,2.8,2.6,1.8,3],"SLP":[1024,1025,1024,1025,1025,1024,1023,1024,1024,1024,1024,1024,1025,1025,1024,1024,1024,1023,1023,1022,1021,1020,1018,1017,1017,1016,1014,1012,1011,1010,1008,1008,1008,1010,1011,1013,1014,1016,1016,1017,1018,1019,1021,1021,1022,1022,1022,1022,1023],"APCP1":[null,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0.1,0.3,0.1,0.1,0.1,0.1,0.1,0.1,0,0,0,0.1,0,0,0,0,0,0,0,0,0,0,0],"WINDSPD":[10.1,10.6,11.5,12,12.4,12.7,12,12.1,11.9,10.7,8.6,8.4,7.7,6.8,6.4,6.3,5.9,6.5,6.5,6.7,7.1,7.1,7.5,8,8.5,8.9,10.5,11.2,11.5,11.3,11.5,11.6,11.5,15.1,11.9,10.2,7,10.4,9.1,5.8,3.7,3.1,2.7,2.8,2.7,3,2.8,2.6,3.5],"WINDDIR":[247,248,253,252,251,249,247,246,243,244,239,240,240,235,231,225,214,214,213,205,204,201,196,193,197,195,190,197,214,230,245,252,264,285,285,284,273,284,309,309,312,315,254,230,206,182,164,137,151],"SMERN":["11","11","11","11","11","11","11","11","11","11","11","11","11","10","10","10","10","10","9","9","9","9","9","9","9","9","8","9","10","10","11","11","12","13","13","13","12","13","14","14","14","14","11","10","9","8","7","6","7"],"TMPE":[-18,-18.3,-17.5,-16.6,-15.6,-14.9,-14.2,-13.8,-13.7,-14.3,-15.4,-15.7,-16.2,-16.4,-16.5,-16.3,-16.1,-15.9,-16.1,-16.1,-16.1,-15.9,-14.6,-13.5,-13.1,-12.7,-12.5,-11.3,-9.7,-8.6,-7.2,-7,-6.7,-6.8,-8.8,-9.5,-10.5,-9.1,-10.8,-12.7,-13.7,-14.8,-16,-17.2,-18.1,-18.5,-19.4,-18.9,-19],"hr_weekday":[5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,0,0,0,0,0,0,0,0],"hr_h":["07","08","09","10","11","12","13","14","15","16","17","18","19","20","21","22","23","00","01","02","03","04","05","06","07","08","09","10","11","12","13","14","15","16","17","18","19","20","21","22","23","00","01","02","03","04","05","06","07"],"hr_d":["01","01","01","01","01","01","01","01","01","01","01","01","01","01","01","01","01","02","02","02","02","02","02","02","02","02","02","02","02","02","02","02","02","02","02","02","02","02","02","02","02","03","03","03","03","03","03","03","03"],"hours":[0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48],"vars":["TMP","TCDC","HCDC","MCDC","LCDC","RH","GUST","SLP","APCP1","WINDSPD","WINDDIR","SMERN","TMPE"],"initdate":"2019-02-01 12:00:00","init_d":"01.02.2019","init_dm":"01.02.","init_h":"12","initstr":"2019020112","model_name":"HRW 4 km","model_longname":"HRW 4 km (US)","id_model":38,"update_last":"2019-02-01 17:19:03","update_next":"2019-02-02 05:25:00","img_param":[],"img_var_map":{"WINDSPD":"windspd","MWINDSPD":"windspd","SMER":"windspd","SMERN":"windspd","WINDDIR":"windspd","TMP":"t2m","TMPE":"t2m","APCP1":"tcdc_apcp1","APCP1s":"tcdc_apcp1","HCDC":"tcdc_apcp1","MCDC":"tcdc_apcp1","LCDC":"tcdc_apcp1","CDC":"tcdc_apcp1","TCDC":"tcdc_apcp1","SLP":"press"}}}}'

Les seules différences que je vois entre ces deux contenus sont l'insertion de \\\ dans le premier cas contre des simples \ dans le deuxième cas... Mais la variable m.group(1) contient bien ce qu'elle doit contenir dans le premier cas, et le programme me renvoie tout de même l'erreur suivante :
Code:

1 2 3 4 5 6 7 8 9 10 Traceback (most recent call last): File "C:\Users\Université Laval\Documents\Tests\texte.py", line 22, in <module> dico = json.loads(m.group(1)) File "C:\Users\Université Laval\AppData\Local\Programs\Python\Python37\lib\json\__init__.py", line 348, in loads return _default_decoder.decode(s) File "C:\Users\Université Laval\AppData\Local\Programs\Python\Python37\lib\json\decoder.py", line 337, in decode obj, end = self.raw_decode(s, idx=_w(s, 0).end()) File "C:\Users\Université Laval\AppData\Local\Programs\Python\Python37\lib\json\decoder.py", line 353, in raw_decode obj, end = self.scan_once(s, idx) json.decoder.JSONDecodeError: Invalid \escape: line 1 column 59 (char 58)
Merci de m'aider bistouille !

05/02/2019, 19h07
bistouille

Salut.

Comment et avec quoi est chargée la page html ? Ces backslashs doivent être ajoutés à cet étape, enfin je suppose.

En attendant de comprendre où ils sont ajoutés, rien ne t'empêche des les supprimer avec un simple str.replace("\\", "")
05/02/2019, 19h45
ULaval
Salut bistouille,

Ma page internet est chargée avec :
Code:

1 2 page = urllib.request.urlopen('site web') html = str(page.read())
Effectivement, ta solution avec str.replace("\\", "") solutionne tout, et le programme marche désormais parfaitement en récupérant la page web directement sur internet.

Ils sont bien ajoutés à la lecture de la page directement car en affichant le code dans un fichier ils sont présents alors qu'ils ne le sont pas dans le code source directement...

Merci énormément ! UL
05/02/2019, 21h57
bistouille

Remplace :

Code:

html = str(page.read())

Par :

Code:

html = page.read().decode()

Et tu n'auras plus ces problèmes de caractères échappés, et donc plus besoin de faire de remplacements ;)
06/02/2019, 16h28
ULaval

Merci beaucoup, ça marche et c'est même bien plus rapide :P

Saurais-tu m'expliquer d'où vient l'ajout des \\ si l'on ne met pas .decode() ?

Bonne journée !
06/02/2019, 20h54
bistouille
Salut ULaval.

urllib.request.urlopen retourne un type bytes, pour convertir un bytes en str, il faut utiliser bytes.decode.

Maintenant pourquoi le fait de transformer un bytes avec str fait échapper les apostrophes, je ne m'avance pas, mais je pense que c'est lié à la façon dont les chaînes de caractères sont représentées par pyhton, entre apostrophes donc.

Un petit test permet de s'en assurer.
Code:

1 2 3 4 5 6 7 8 >>> s = "un p'tiot \"apostrophe\"" >>> s 'un p\'tiot "apostrophe"' >>> b = s.encode() >>> b b'un p\'tiot "apostrophe"' >>> str(b) 'b\'un p\\\'tiot "apostrophe"\''
str étant représenté entre apostrophes, les échappements de guillemets sont supprimés, en revanche chaque apostrophe de la chaîne est échappée, logique puisque le délimiteur de chaîne est justement l"apostrophe.
Le fait de transformer la chaîne en bytes ne change rien.
En revanche en convertissant le bytes en str (sans decode), il y a une nouvelle conversion en une nouvelle chaîne de la représentation du bytes, ce qui induit une nouvelle séquence d'échappements, et les \' sont transformés en \\\', ce qui est en y réfléchissant bien somme toute logique, car sinon on se retouverait avec des caractères exotiques ou comme tu as eu, des problèmes de caractères invalides.