Hi
I am working on Linux with Python 3.4.
I want to do a bash diff on two text files and show just the first 20 lines of
diff's output. So I tried:
>>> cmd = 'head -20 <(diff ' + file1 + ' ' + file2 + ')'
>>> subprocess.check_call(cmd, shell=True)
The command contained in cmd works ok from the bash prompt but not from Python
code. In Python I get:
/bin/sh: -c: line 0: syntax error near unexpected token `('
I think the problem is that check_call is not using the bash shell. So I also
tried:
>>> subprocess.check_call("bash", "-O", "extglob", "-c", cmd)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/local/lib/python3.4/subprocess.py", line 556, in check_call
retcode = call(*popenargs, **kwargs)
File "/usr/local/lib/python3.4/subprocess.py", line 537, in call
with Popen(*popenargs, **kwargs) as p:
File "/usr/local/lib/python3.4/subprocess.py", line 767, in __init__
raise TypeError("bufsize must be an integer")
TypeError: bufsize must be an integer
Can anyone help me with this please?
Best regards
David
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