How to append a value to an option in config file using Python

Question

I have config file as below:

[SECTION]
email = user1@exmple.com, user2@example.com

Now i want to append some more email ids in email using python, which should like as given below:

email = user1@exmple.com, user2@example.com, user3@example.com, user4@example.com

Please let me know how to do that.

What's the issue? Did you check configparser's docs: https://docs.python.org/2/library/configparser.html ? — Ashwini Chaudhary, Dec 26 '17 at 07:32
Yes i checked. But i did not know the usage of "a +". Now it is working. Thanks. — nancy, Dec 27 '17 at 07:23

Rakesh · Accepted Answer · 2017-12-26T08:04:04.687

1

from ConfigParser import SafeConfigParser
parser = SafeConfigParser()
parser.read('sample.ini')

a = parser.get('SECTION', 'email')
parser.set('SECTION', 'email', a + ', user3@example.com, user4@example.com')
with open('sample.ini', 'wb') as f:
    parser.write(f)

edited Dec 26 '17 at 08:04

answered Dec 26 '17 at 07:58

Rakesh

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score 0 · Answer 2 · answered Dec 26 '17 at 07:55

0

One thing you can try is:

Read the file in r+ mode

Find the string email = .*\.com

Concatenate your additional email addresses to that string

write the data back to the file.

answered Dec 26 '17 at 07:55

eiram_mahera

950
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25

score 0 · Answer 3 · answered Jun 15 '20 at 21:19

This code handles if entry does not yet exist.

configFilePath = os.path.join(unreal.Paths.project_config_dir(), 'DefaultGame.ini')
gameConfig = SafeConfigParser()
gameConfig.read(configFilePath)
try:
    existing = gameConfig.get('/Script/Engine.AssetManagerSettings', 'MetaDataTagsForAssetRegistry')
    if PROTECTED_ASSET_METADATA_TAG_STRING not in existing:
        newEntry = existing[:-1] + ',"{}")'.format(PROTECTED_ASSET_METADATA_TAG_STRING)
    else:
        newEntry = ''
except NoOptionError:
    newEntry = '("{}")'.format(PROTECTED_ASSET_METADATA_TAG_STRING)
if newEntry:
    gameConfig.set('/Script/Engine.AssetManagerSettings', 'MetaDataTagsForAssetRegistry', newEntry)
    with open(configFilePath, 'wb') as f:
        gameConfig.write(f)

trohit · Answer 4 · 2023-05-27T05:48:24.863

Just updating @Rakesh 's answer as I saw a deprecation warning like :

DeprecationWarning: The SafeConfigParser class has been renamed to ConfigParser in Python 3.2. This alias will be removed in Python 3.12. Use ConfigParser directly instead. parser = SafeConfigParser()

Some python modules have changed since then. in Python 3, ConfigParser has been renamed configparser. See Python 3 ImportError: No module named 'ConfigParser for more details.

#!/usr/bin/env python3
import os
from configparser import ConfigParser

abs_file_name = 'sample.ini'
parser = ConfigParser()
rec = ''
# if file already exists, read it up
if os.path.isfile(abs_file_name):
    parser.read(abs_file_name)
    rec = parser.get('SECTION', 'email')

else: # write a brand new config file
    parser.add_section('SECTION')

# then add the new contents
parser.set('SECTION', 'email', rec+', user3@example.com, user4@example.com')

# save contents
with open(abs_file_name, 'w') as f:
        parser.write(f)

How to append a value to an option in config file using Python

4 Answers4