Search and Replace using regex in python

Question

str = '{"name": "John", "company": "AB"C corp", "id": "12g: "123 12-12"}'

B"C replace with empty string ''

g: "1 replace with empty string ''

Required string

str = '{"name": "John", "company": "A corp", "id": "1223 12-12"}'

What is the regex for this?

Tried

import re

str = re.sub(r'^[a-zA-Z0-9: "0-9]$', "", str)

Examples:

Valid: '"name": "John"'
Invalid: '"nam"e": "Jo"hn"'

Valid: '"id": "12A"'
Invalid: 'id: "12A"'

Regex? Why not str.replace('B"C', '').replace('g: "1', '')? — Aran-Fey
– Aran-Fey, Commented Feb 12, 2018 at 4:41
It can be any Letter / number and not B"C or g: "1. Hence regex — user544079
– user544079, Commented Feb 12, 2018 at 4:42
Can you please state your requirements accurately? What can be any letter/number? It's impossible to tell if you want \w: "\w or \w: "\d or [a-z]: "\d or one of the other 50 possible regexes. — Aran-Fey
– Aran-Fey, Commented Feb 12, 2018 at 4:45
Something like this would work for your cases [A-Za-z][^"]*"\w but as @Aran-Fey says, the requirements are not clear — damores
– damores, Commented Feb 12, 2018 at 4:47
Examples: Valid: '"name": "John"' Invalid: '"nam"e": "Jo"hn"' Valid: '"id": "12A"' Invalid: 'id: "12A"' — user544079
– user544079, Commented Feb 12, 2018 at 4:51

Keerthana Prabhakaran · Accepted Answer · 2018-02-12 05:15:14Z

2

You can try this!

check if you have a character, (a colon or space or both) that is followed by " and by a \w(character or number).

>>> s
'{"name": "John", "company": "AB"C corp", "id": "12g: "123 12-12"}'
>>> re.sub('\w[: ]*"\w','',s)
'{"name": "John", "company": "A corp", "id": "1223 12-12"}'

answered Feb 12, 2018 at 5:15

Keerthana Prabhakaran

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Comments

Yunkai Xiao · Accepted Answer · 2018-02-12 04:53:41Z

0

Do you mean \W"\W and \w: "\d are the only cases you're worrying about?

Then try this:

str = re.sub(r'([a-zA-Z](\: )?"[A-Z0-9])', "", str)

answered Feb 12, 2018 at 4:53

Yunkai Xiao

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2 Comments

Avinash Raj Over a year ago

1. no need for capturing group 2. no need to escape :

user544079 Over a year ago

How to remove double quotes inside a double quotes. Ex "{"name": "John"}" needs to become "{'name': 'John'}"

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