Matching and replace multiple strings in python [closed]

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import re
text = '{"mob":"1154098431","type":"user","allowOrder":false,"prev":1}'

newstring = '"allowOrder":true,"'
#newstring = '"mob":"nonblocked",'

reg = '"allowOrder":(.*?),"|"mob":"(.*?)",'
r = re.compile(reg,re.DOTALL)
result = r.sub(newstring, text)

print (result)

im trying to matching and replacing multiple regex patterns with exact values can someone help me to achieve this

Wouldn't it be easier to parse the JSON, manipulate it, and dump it back as a string? Why use regexes here? — Nick ODell
– Nick ODell, Commented May 4, 2023 at 3:27
Okay. What's the intended output? You mention that you want multiple replacements - what should the replaced value be? — Nick ODell
– Nick ODell, Commented May 4, 2023 at 3:32
output = {"allowOrder":true,""type":"user","allowOrder":true,"prev":1} i need to multiple change mob and allowOrder with different values — Annie Chain
– Annie Chain, Commented May 4, 2023 at 3:38
This is easy: import json; data = json.loads(text); data['allowOrder'] = True; data['mob'] = 'nonblocked'; data_dump = json.dumps(data). This is not. — InSync
– InSync, Commented May 4, 2023 at 3:42

Adam Smith · Accepted Answer · 2023-05-04 03:38:43Z

1

You should parse the JSON rather than trying to use regex for this. Luckily that's real straightforward.

import json

text = '{"mob":"1154098431","type":"user","allowOrder":false,"prev":1}'
obj = json.loads(text)  # "loads" means "load string"

if 'allowOrder' in obj:
    obj['allowOrder'] = True
if 'mob' in obj:
    obj['mob'] = 'nonblocked'

result = json.dumps(obj)  # "dumps" means "dump to string"

assert '{"mob": "nonblocked", "type": "user", "allowOrder": true, "prev": 1}' == result

answered May 4, 2023 at 3:38

Adam Smith

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2 Comments

Annie Chain Over a year ago

working fine but with spaces between chars {"mob": "nonblocked", "type": "user", "allowOrder": true, "prev": 1}}

Annie Chain Over a year ago

fixed by result = json.dumps(obj, separators=(',', ':'))

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