Standard Input / output does not work on LinuxMint 21.1 (Ubuntu 22.04)

[RakonT]

Test case via command line:
echo "print('Hello World')" | cheetah-compile3 -

Error:

Traceback (most recent call last):
  File "/usr/bin/cheetah-compile3", line 3, in <module>
    _cheetah_compile()
  File "/usr/lib/python3/dist-packages/Cheetah/CheetahWrapper.py", line 662, in _cheetah_compile
    CheetahWrapper().main()
  File "/usr/lib/python3/dist-packages/Cheetah/CheetahWrapper.py", line 147, in main
    meth()
  File "/usr/lib/python3/dist-packages/Cheetah/CheetahWrapper.py", line 258, in compile
    self._compileOrFill()
  File "/usr/lib/python3/dist-packages/Cheetah/CheetahWrapper.py", line 344, in _compileOrFill
    self._compileOrFillStdin()
  File "/usr/lib/python3/dist-packages/Cheetah/CheetahWrapper.py", line 590, in _compileOrFillStdin
    sys.stdout.write(output)
TypeError: write() argument must be str, not bytes

Cause:

• Trying to print unicode string (binary) with sys.sdtout.write()
• This this is binary, sys.stdout.buffer.write() is needed

Solution:

• Change source as follows:
• File: /usr/lib/python3/dist-packages/Cheetah/CheetahWrapper.py
• Line 582 to 590

        if self.isCompile:
            pysrc = TemplateClass.compile(file=sys.stdin, compilerSettings=compilerSettings, returnAClass=False)
            sys.stdout.buffer.write(pysrc)
        else:
            output = str(TemplateClass(file=sys.stdin, compilerSettings=compilerSettings)) 
            sys.stdout.write(output)

[phdru]

Thanks! Care to send a pull request?

[RakonT]

Thanks! Care to send a pull request?

If you still need help, I can give it a try. Never did a pull request before...

[phdru]

@RakonT Sure, go on! From June 11 to 19 I'll be on vacation, disconnected. Will be back June 20 and look at your effort.

[RakonT]

Ok. I will give it a go. Enjoy your vacation!

[RakonT]

@phdru I may the changes to be as consistent as possible with existing code and backwards compatible for python2. I was unable to run regression tests but did test the code manually in my own environment. Hopefully, this acceptable. Thanks.
Pull request here: #56

[phdru]

Thanks! I'm working on running tests at GH Actions with Python and PyPy installed from conda-forge. I'll return to test the PR.

[phdru]

To make you informed: I'm close but not finished yet: https://github.com/CheetahTemplate3/cheetah3/actions/runs/5576456787

[phdru]

Merged. Thank you very much!

[phdru]

I release version 3.3.2 with your fix. Thanks again!