isatty should force usage of the colored formatter

[bitranox]

some terminals (like travis and jupyter) can not have colored output, because the terminal is checked again with humanfriendly.terminal_supports_colors(stream)

this leads to no coloured output on travis and jupyter.

the 'isatty' keyword is triadic :

isatty = None  # autodetect if we can use color
isatty = False  # dont  use color

at the Moment You treat isatty = True the same way like it would be None - but isatty=True should force the use of the ColoredFormatter !

If You dont like it for a reason, You also can put a new keyword like force_color but from my point of view it should not be neccessary.

However, with that patch the colored output is possible now for Jupyter (on stdout) and Travis (on stderr) !

please consider it, until then I need to host my own fork on pypi to get the wheels ....

yours sincerely

Robert

[coveralls]

Coverage increased (+0.4%) to 91.909% when pulling 26eceb3 on bitranox:master into 3935774 on xolox:master.

[bitranox]

Dear Peter,
I quickly forked it, since I need it urgently.

here the link to a binder on jupyter what shows the issue nicely :

https://mybinder.org/v2/gh/bitranox/bitranox_coloredlogs/master?filepath=bitranox_coloredlogs.ipynb

[xolox]

Thanks for the feedback and sorry for the messy behavior. As mentioned in #92:

This (bad) experience was never intended, the override was always intended to bypass any auto detection check. Today I published coloredlogs release 14.1 which fixes the override to bypass the auto detection check (as well as the bug that confused stdout versus stderr).

I hope the new release resolves the issues (and downright confusing behavior) that have been reported.

[joooeey]

When running the binder linked above, I can see that this has been resolved. However I haven't managed to get it to work in Jupyter. I'm using coloredlogs 15.0.

[joooeey]

I solved it now. It's important to set isatty=True and if you don't want the red background you also have to set stream=sys.stdout

[thoughtfuldata]

@joooeey where do you set isatty=True?

[joooeey]

@thoughtfuldata when you call coloredlogs.install. I.e.

import coloredlogs, logging
coloredlogs.install(level='DEBUG', isatty=True)
logger = logging.getLogger('some.module.name')
logger.info("this is an informational message")