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How to make for loop faster in python?

What are the quickest Python alternatives to Perl one-liners like "perl -n -e ..."?

  • It seems no obvious brief command-line alternatives exist except the more verbose "python -c ..." (which requires writing imports, a loop, etc.). Are there other alternatives or tools to make this quicker? Cf. http://stackoverflow.com/questions/367115/is-there-a-python-equivalent-to-perl-pi-e

  • Answer:

    Python does not lend itself well to dense one-liners. I would argue this is a plus. :-) If you need functionality like this, the generally-accepted solution is to create assorted shell scripts, or a custom module with assorted shell scripts inside of it, or create a basic DSL that does what you want (which the SO answer that links to the ActiveState code suggests doing).

Vaibhav Mallya at Quora Visit the source

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Print json in nice format using python command line. Very useful. echo '{"name": "fname", "family": "lame"}' | python -mjson.tool

Aniket Ashok Zamwar

To beautify a json file in python one-liner cat file.json | python -m json.tool Start a simple http server anywhere python -m SimpleHTTPServer Print every line from an input file but remove the first two fields. python -c "import sys;[sys.stdout.write(' '.join(line.split(' ')[2:])) for line in sys.stdin]" < input.txt

Bipul Jain

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