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logfmt-python's Introduction

This project is now managed by @wlonk at https://github.com/wlonk/logfmt-python.

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Logfmt

Python package for parsing log lines in the logfmt style. See the original project by Blake Mizerany and Keith Rarick for information about logfmt conventions and use: https://github.com/kr/logfmt

Using logfmt

Easily process lines from logfmt formatted input:

from logfmt import parse

input = StringIO('\n'.join(['key1=value1', 'key2=value2']))
for values in parse(input):
    print values

This program produces this output:

{'key1': 'value1'}
{'key2': 'value2'}

Easily generate lines in logfmt formatted output

from logfmt import format

for line in format({'key1': 'value1'}, {'key2': 'value2'}):
    print line

This program produces this output:

key1="value1"
key2="value2"

Installation

To install it, simply:

pip install logfmt

logfmt-python's People

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logfmt-python's Issues

"ValueError: incomplete format" on LogfmtFormatter

Hi,

I am trying to use LogfmtFormatter as such:

h = Handler()
h.setFormatter(LogfmtFormatter())

And getting following error:

--- Logging error ---
Traceback (most recent call last):
File "/usr/lib/python3.7/logging/init.py", line 1025, in emit
msg = self.format(record)
File "/usr/lib/python3.7/logging/init.py", line 869, in format
return fmt.format(record)
File "/usr/lib/python3.7/site-packages/logfmt/formatter.py", line 27, in format
'at=%' % record.levelname,
ValueError: incomplete format
Call stack:
File "my.py", line 72, in
logger.info('Hello, World!')
Message: 'Hello, World!'
Arguments: ()
--- Logging error ---
Traceback (most recent call last):
File "/usr/lib/python3.7/logging/init.py", line 1025, in emit
msg = self.format(record)
File "/usr/lib/python3.7/logging/init.py", line 869, in format
return fmt.format(record)
File "/usr/lib/python3.7/site-packages/logfmt/formatter.py", line 27, in format
'at=%' % record.levelname,
ValueError: incomplete format
Call stack:
File "my.py", line 73, in
logger.debug('Hello, World!')
Message: 'Hello, World!'
Arguments: ()

Looking at the code, is a %s missing?

"foo=bar=bat" parsed incorrectly

% python
Python 3.9.5 (default, May 11 2021, 08:20:37) 
[GCC 10.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import logfmt.parser
>>> logfmt.parser.parse_line("foo=bar=bat")
{'foo': 'bar', 'bat': True}

By my reading of https://pkg.go.dev/github.com/kr/logfmt, this should be {'foo': 'bar=bat'}, since string_byte includes = (though ident_byte does not).

Parsing the quotes on logfmt format

I'm trying to parse quotes on logfmt format but, the value after the quote become new key with value "True".
iimport logfmt from logfmt import format import io raw_text=io.StringIO("ts=1579739313\"80007168") rawdata=logfmt.parse(raw_text) for i in rawdata: print(i)

output
{'ts': '1579739313', '80007168': True}

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