Couldn't import tesserocr, because locale check error

[atuyosi]

I got a import error.

import tesserocr
!strcmp(locale, "C"):Error:Assert failed:in file baseapi.cpp, line 203
Abort trap: 6

This error was caused by locale check.

Please see commit .

Simple workaround here .

import locale
locale.setlocale(locale.LC_ALL, 'C')
import tesserocr

I think that it is necessary to add the code somewhere in the appropriate place.

Environment:

• macOS 10.13.6
• Python 3.6.5
• tesserocr 2.3.0
• tesseract 4.0.0-beta.4-20-ge9b4e

In addition, I avoid install error by #129 workaroud.

[sirfz]

tesseract 4 requires LC_ALL, LC_CTYPE and LC_NUMERIC to be set to C: https://github.com/tesseract-ocr/tesseract/blob/4.0.0-beta.4/src/api/baseapi.cpp#L203

In my local tests it seems to have no effect with Python 2.7 but crashes with Python 3.6 and 3.7.

I'm reluctant to hard-code this into tesserocr because I'm not sure what the effect would be on other modules or Python's behavior. Maybe someone with more knowledge about this can chip in?

[atuyosi]

As you said, the hardcoding is undesirable.

IMO, I think that it is necessary to ask the Cython community about handling environment variables.

cf. 24.2. locale — Internationalization services — Python 3.7.0 documentation

FYI, other Language's solution.

Various fixes for Tesseract 4 beta.3 · ropensci/tesseract@2784542

[sirfz]

Changing locale before and after calling Init seems reasonable so I'll go with that (thanks for the links). Would resetting the locale to something other than C affect the results of other API methods though?

[sirfz]

According to tesseract-ocr/tesseract/issues/1670, this might only be temporary until they replace function calls which rely on locale settings. I'd rather wait and see how this plays out before pushing any patches.

[sirfz]

This has been fixed in tesseract 4.1