유용한 팁

#!/usr/bin/env python
# examples/script-template.py

def main(args):
    if not args:
        print "Usage: foo ARG1 [ARG2...]"
        return 2
    return args

if __name__ == '__main__':
    import sys
    status = main(sys.argv[1:])
    sys.exit(status)
    # or combined
    # sys.exit(main(sys.argv[1:]))

$ python basic_python_script.py
Usage: foo ARG1 [ARG2...]

$ python basic_python_script.py 1 2 3
['1', '2', '3']

>>> a = range(5)
>>> type(a)
<type 'list'>
>>> b = xrange(5)
>>> type(b)
<type 'xrange'>
>>> a.__doc__
"list() -> new empty list\nlist(iterable) -> new list initialized from iterable's items"
>>> b.__doc__
'xrange([start,] stop[, step]) -> xrange object\n\nLike range(), but instead of returning a list, returns an object that\ngenerates the numbers in the range on demand.  For looping, this is \nslightly faster than range() and more memory efficient.'

$ pyvenv-3.4 .venv
Error: Command '['/home/ubuntu/test/.venv/bin/python3.4', '-Im', 'ensurepip', '--upgrade', '--default-pip']' returned non-zero exit status 1

$ python3 -m venv .env
Error: Command '['/home/ubuntu/test/env/bin/python3', '-Im', 'ensurepip', '--upgrade', '--default-pip']' returned non-zero exit status 1

$ pyvenv-3.4 --without-pip .venv
$ source .venv/bin/activate
$ wget https://pypi.python.org/packages/source/s/setuptools/setuptools-18.0.1.tar.gz
$ wget https://pypi.python.org/packages/source/p/pip/pip-7.1.0.tar.gz
$ tar xfvz pip-7.1.0.tar.gz
$ tar xfvz setuptools-18.0.1.tar.gz
$ cd setuptools-18.0.1
$ python setup.py install
$ cd ../pip-7.1.0
$ python setup.py install
$ cd ..
$ rm -rf pip* setuptools*
$ deactivate
$ source .venv/bin/activate
$ deactivate
$ source .venv/bin/activate