CODEWITHSUNDEEP
python-3.xconfigparser
moly
moly

Reputation: 433

How to use python's configparser to write a file without sections

I need to modify a config file using python. The file has a format similar to

property_one = 0
property_two = 5

i.e there aren't any section names.

Python's configparser module doesn't support sectionless files, but I can use it to load them easily anyway using the trick from here: https://stackoverflow.com/a/26859985/11637934

parser = ConfigParser()
with open("foo.conf") as lines:
    lines = chain(("[top]",), lines)  # This line does the trick.
    parser.read_file(lines)

The problem is, I can't find a clean way to write the parser back to a file without the section header. The best solution I have at the moment is to write the parser to a StringIO buffer, skip the first line and then write it to a file:

with open('foo.conf', 'w') as config_file, io.StringIO() as buffer:
    parser.write(buffer)
    buffer.seek(0)
    buffer.readline()
    shutil.copyfileobj(buffer, config_file)

It works but it's a little ugly and involves creating a second copy of the file in memory. Is there a better or more concise way of achieving this?

Upvotes: 3

Views: 2017

Answers (1)

moly
moly

Reputation: 433

Stumbled on a less ugly way of doing this:

text = '\n'.join(['='.join(item) for item in parser.items('top')])
with open('foo.conf', 'w') as config_file:
    config_file.write(text)

Upvotes: 3

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