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Description
Bug report
subprocess.check_output(input=None) raises an AttributeError when called with encoding or errors args.
Example:
>>> check_output(['ls'], input=None, encoding='utf-8')Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/Users/ak/opensource/cpython4/Lib/subprocess.py", line 466, in check_output return run(*popenargs, stdout=PIPE, timeout=timeout, check=True, ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/Users/ak/opensource/cpython4/Lib/subprocess.py", line 549, in run stdout, stderr = process.communicate(input, timeout=timeout) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/Users/ak/opensource/cpython4/Lib/subprocess.py", line 1206, in communicate stdout, stderr = self._communicate(input, endtime, timeout) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/Users/ak/opensource/cpython4/Lib/subprocess.py", line 2035, in _communicate self._save_input(input) File "/Users/ak/opensource/cpython4/Lib/subprocess.py", line 2115, in _save_input self._input = self._input.encode(self.stdin.encoding, ^^^^^^^^^^^^^^^^^^AttributeError: 'bytes' object has no attribute 'encode'. Did you mean: 'decode'?Your environment
- CPython versions tested on: 3.12 (the issue is also present in 3.10 and 3.11)
- Operating system and architecture: MacOS M1, 11.5
I will create a PR a bit later today.