Python `-m`


Author: yifei / Created: May 30, 2017, 9:19 p.m. / Modified: May 30, 2017, 9:32 p.m. / Edit

How -m is invoked

if you have a module foo

write foo/ __init__.py __main__.py

then python -m foo will execute __main__.py

https://pythonwise.blogspot.sg/2015/01/python-m.html

json pretty print

cat some_json_file | python -m json.tool

zipfile

zipfile.py -l zipfile.zip        # Show listing of a zipfile zipfile.py -t zipfile.zip        # Test if a zipfile is valid zipfile.py -e zipfile.zip target # Extract zipfile into target dir zipfile.py -c zipfile.zip src ... # Create zipfile from sources

gzip

python -m gzip wordlist.txt  # Will create wordlist.txt.gz python -m gzip -d wordlist.txt.gz  # Will extract to wordlist.txt

filecmp

compare two directories

$ python -m filecmp /tmp/a /tmp/b diff /tmp/a /tmp/b Only in /tmp/a : ['1'] Only in /tmp/b : ['2'] Identical files : ['4'] Differing files : ['3']

Several modules lets you encode/decode in various formats: • base64 • uu • encodings.rot_13 • binhex • mimify • quopri For example $ echo 'secertpassword' | python -m encodings.rot_13 frpregcnffjbeq

servers

python -m SimpleHTTPServer # 2 python -m http.server #3

python -m pydoc {module/func}

Profiling

python -m cProfile script.py python -m timeit script.py python -m pstats script.py python -m trace script.py


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