Is there a command line(preferably) utility program that lists all major versions of python that come bundled with a particular module in that version's library?
For example json module is only available in versions 2.6+
So running this utility should list:
2.6
2.7
.. and the 3.x versions
There is no such built-in command.
If having an internet connection is not an issue you can simply check the url at https://docs.python.org/<version-number>/library/<module-name>.html:
from urllib.request import urlopen
from urllib.error import HTTPError
def has_module(version, module_name):
try:
urlopen('https://docs.python.org/{}/library/{}.html'.format(version, module_name))
except HTTPError as e:
if e.code == 404:
return False
raise e
return True
Example usage:
In [2]: has_module('2.7', 'asyncio')
Out[2]: False
In [3]: has_module('3.3', 'asyncio')
Out[3]: False
In [4]: has_module('3.4', 'asyncio')
Out[4]: True
Must be run in python3, but a python2 version isn't hard to write.
If you want an offline tool you can always parse the page https://docs.python.org/<version-number>/library/index.html and obtain a list of module pages for that python version and then just build a dict that maps the python version to the set of available modules.
raise e does). When using that function you should check for other errors and just print "server down" or something. That's the downside of a solution that relies on an internet connection...