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Python ConfigParser with colon in key

How to put semicolon in value in python configurator?

Python - 2.7

I have a python parser with a section where the key is the url and the value is the token. A key that is a URL contains :, - ,? and various other symbols also refer to value. As you can see from the above question, the special characters in the value section look ok, but the key doesn't look ok.

Is there anything I can do about this? My alternatives allow json file and manually write / read it manually.

For example, if you run the program below as soon as I receive

cp = ConfigParser.ConfigParser()
cp.add_section("section")
cp.set("section", "http://myhost.com:9090", "user:id:token")
cp.set("section", "key2", "value2")
with open(os.path.expanduser("~/test.ini"), "w") as f:
    cp.write(f)

cp = ConfigParser.ConfigParser()
cp.read(os.path.expanduser("~/test.ini"))
print cp.get("section", "key2")
print cp.get("section", "http://myhost.com:9090")

the file looks like below

[section]
http://myhost.com:9090 = user:id:token
key2 = value2

And I am getting exceptions ConfigParser.NoOptionError: No option 'http://myhost.com:9090' in section: 'section'

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5 answers


ConfigParser

on Python 2.7 is hardcoded to recognize both colon and equal sign as separators between keys and values. The current Python 3 module ConfigParser

allows custom separators. A backport for Python 2.6-2.7 is available at https://pypi.python.org/pypi/configparser



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  • Separate your url protocol, base and port, i.e. bits after: and use them as secondary keys OR
  • Replace: with something allowed and vice versa, perhaps using 0xnn notation or something similar OR
  • As a key, you can use a URL based value such as the MD5 of the URL.


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I solved a similar problem by changing the regex used ConfigParser

to be used =

as separator.

This has been tested in Python 2.7.5 and 3.4.3

import re
try:
    # Python3
    import configparser
except:
    import ConfigParser as configparser

class MyConfigParser(configparser.ConfigParser):
    """Modified ConfigParser that allow ':' in keys and only '=' as separator.
    """
    OPTCRE = re.compile(
        r'(?P<option>[^=\s][^=]*)'          # allow only = 
        r'\s*(?P<vi>[=])\s*'                # for option separator           
        r'(?P<value>.*)$'                   
        )
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see http://bugs.python.org/issue16374

semicolons are inline comments in 2.7

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You can use the following solution to accomplish your task

Replace all colons with special special characters such as "_" or "-", which are allowed in ConfigParser

code:

from ConfigParser import SafeConfigParser

cp = SafeConfigParser()
cp.add_section("Install")
cp.set("Install", "http_//myhost.com_9090", "user_id_token")
with open("./config.ini", "w") as f:
    cp.write(f)

cp = SafeConfigParser()
cp.read("./config.ini")
a = cp.get("Install", "http_//myhost.com_9090")
print a.replace("_",":")

Output:

User: id: token

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