Colors do not work if tqdm imported.

[krishnachouhan]

This code works...

_CRED = '\033[91m'
_CEND = '\033[0m'
print(_CRED + "Colors bre being set" + _CEND + '-all_set')

but after importing the same code does not work.

import tqdm
_CRED = '\033[91m'
_CEND = '\033[0m'

print(_CRED + "Colors bre being set" + _CEND + '-all_set')

Python:
(base) C:\Users\212574384>python --version
Python 3.7.0
OS: win 10

[casperdcl]

just to confirm, if you import colorama instead of import tqdm, does it still break?

[krishnachouhan]

colorama works fine.

!sorry about closing, very new to this..

[svlandeg]

We ran into this issue as well because spaCy uses tqdm (explosion/spaCy#4200). We found that this bug seems to happen specifically on Windows, and not on other OS's.

[casperdcl]

Found the issue - for now, please use:

import tqdm  # or whatever tqdm imports you use
import colorama
colorama.deinit()
colorama.init(strip=False)

Will patch soon...

[casperdcl]

tartley/colorama#79

[H4CKY54CK]

I've been experiencing this issue for a long time. I just happened across this page, but the proposed temporary fix is not working for me. Has anything changed since then? I'm on Python 3.8, I just updated tqdm and colorama via pip, and still experiencing the issue.

Actually, using this on it's own disables my colors entirely.

import colorama
colorama.deinit()
colorama.init(strip=False) # This line seems to be doing the actual disabling.

EDIT: I don't know how relevant this is, but I thought I'd mention that I have VirtualTerminalLevel set to 1 in my registry.

EDIT 2: Sorry for the multiple edits. I'm not familiar with how exactly tqdm uses colorama, but if I omit that last line above, then I get my progress bars, and my colored text. But I don't know if there's something that tqdm now doesn't have that it needs. I don't know, that's why I'm here.

[casperdcl]

I don't know if there's something that tqdm now doesn't have that it needs

It has everything it needs, no worries.

to be clear, are you saying:

1. colours were working
2. import tqdm stops colours working
3. import colorama; colorama.deinit() gets colours working again

[H4CKY54CK]

All of the above.

If I do a simple

print("\x1b[38;2;0;255;0mHello\x1b[0m")

I get a green "Hello".

Once I import tqdm, I lose the color (it still only says "Hello"; it's not doing anything crazy like printing out the ANSI sequence or anything).

If I do

from tqdm import tqdm
import colorama
colorama.deinit()
print("\x1b[38;2;0;255;0mHello\x1b[0m")

I get green text again. But I lose it again with the following.

from tqdm import tqdm
import colorama
colorama.deinit()
colorama.init(strip=False)
print("\x1b[38;2;0;255;0mHello\x1b[0m")

Sorry if that seemed condescending. I just wanted to be explicit.

If this is all normal, then I apologize for commenting on this issue. I can work with this now that I know how to get around the issue, but I suppose you can never have too much data on possible issues.

EDIT: I just thought it was odd that the suggested temporary fix (below) didn't have the expected effect. Unless I misread

Found the issue - for now, please use:

import tqdm  # or whatever tqdm imports you use
import colorama
colorama.deinit()
colorama.init(strip=False)

Will patch soon...

EDIT 2 (lol): Sorry, I'm not complaining, just inquiring.

[casperdcl]

hmm this is odd. Looks related to tartley/colorama#79

importing tqdm will internally do colorama.init(strip=False) on Windows.

1. What's your OS and terminal? I assume OS is Windows, but is the terminal git-bash? Plain command prompt? Notebook?
2. What does your output look like if you run this in one go?

print("\x1b[38;2;0;255;0mCorrectly green\x1b[0m")
import colorama
print("\x1b[38;2;0;255;0mCorrectly green\x1b[0m")
colorama.init(strip=False)
print("\x1b[38;2;0;255;0mShould be green but isn't\x1b[0m")
colorama.deinit()
print("\x1b[38;2;0;255;0mCorrectly green\x1b[0m")
colorama.init()
print("\x1b[38;2;0;255;0mShould be green but isn't\x1b[0m")

I get this on linux (everything correctly green in terminal as well as notebook):

Based on your report I'd take a wild guess that you're using windows and a terminal which can understand ANSI codes but can't understand the windows API calls that colorama produces. Basically tartley/colorama#224 which may be fixed if they merge tartley/colorama#226

[H4CKY54CK]

Windows 10, Python 3.8.5, good old fashioned cmd.

[H4CKY54CK]

I don't know if this is relevant, but it all works correctly if I use cmd to ssh into my Raspberry Pi, and do all the same things from there.

I don't know if this is relevent either, but both this laptop and my previous PC, by default, would just print the actual \x1b[38;2;0;255;0mCorrectly green\x1b[0m, rather than actually interpret the sequence. In both cases, I've had to go into my registry and add/change VirtualTerminalLevel to 1. I don't know how common this is, but I've had to do this ever since I got into python over a year ago.

If there's anything else I can do or provide that would be helpful, don't hesitate to ask. I don't mind.

[H4CKY54CK]

It seems to only be eating the "True Color" sequences (forgive me if that's not the correct term) aka \x1b[38;2;r;g;bm.

But surprisingly, I can use 3/4 bit sequences (again, forgive me if not the correct term) just fine aka \x1b[32m and so on.

I'm not sure what this means, if anything, but I thought you should know.

EDIT: I just realized, I should probably take this on over to the colorama issues, then? Since this is really no longer a tqdm issue anymore.

Final edit: tartley/colorama#217 My legwork was for naught.

Sorry for bothering you about this. Although, I did finally find something concrete on why this happens.

[casperdcl]

My legwork was for naught.

correctly diagnosing and liking an appropriate issue is not for naught!

Thanks; closing for now as it seems to be an issue with an upstream library.

For now, this may be required on some systems:

import tqdm  # or whatever tqdm imports you use
try:
    import colorama
except ImportError:
    pass
else:
    colorama.deinit()  # breaks some windows systems but fixes other windows systems
    # see https://github.com/tartley/colorama/issues/217