It's not possible to install cron module for manage crontab.
playbook pip install cron -vvv
Created temporary directory: /tmp/pip-ephem-wheel-cache-InQUZ3
Created temporary directory: /tmp/pip-req-tracker-0n5EY5
Created requirements tracker '/tmp/pip-req-tracker-0n5EY5'
Created temporary directory: /tmp/pip-install-osV5Xu
Collecting cron
1 location(s) to search for versions of cron:
*
https://pypi.org/simple/cron/ Getting page
https://pypi.org/simple/cron/ Looking up "
https://pypi.org/simple/cron/" in the cache
Request header has "max_age" as 0, cache bypassed
Starting new HTTPS connection (1):
pypi.org:443 https://pypi.org:443 "GET /simple/cron/ HTTP/1.1" 304 0
Analyzing links from page
https://pypi.org/simple/cron/ Could not find a version that satisfies the requirement cron (from versions: )
Cleaning up...
Removed build tracker '/tmp/pip-req-tracker-0n5EY5'
No matching distribution found for cron
Exception information:
Traceback (most recent call last):
File "/usr/local/lib/python2.7/dist-packages/pip/_internal/cli/base_command.py", line 143, in main
status = self.run(options, args)
File "/usr/local/lib/python2.7/dist-packages/pip/_internal/commands/install.py", line 318, in run
resolver.resolve(requirement_set)
File "/usr/local/lib/python2.7/dist-packages/pip/_internal/resolve.py", line 102, in resolve
self._resolve_one(requirement_set, req)
File "/usr/local/lib/python2.7/dist-packages/pip/_internal/resolve.py", line 256, in _resolve_one
abstract_dist = self._get_abstract_dist_for(req_to_install)
File "/usr/local/lib/python2.7/dist-packages/pip/_internal/resolve.py", line 209, in _get_abstract_dist_for
self.require_hashes
File "/usr/local/lib/python2.7/dist-packages/pip/_internal/operations/prepare.py", line 218, in prepare_linked_requirement
req.populate_link(finder, upgrade_allowed, require_hashes)
File "/usr/local/lib/python2.7/dist-packages/pip/_internal/req/req_install.py", line 164, in populate_link
self.link = finder.find_requirement(self, upgrade)
File "/usr/local/lib/python2.7/dist-packages/pip/_internal/index.py", line 621, in find_requirement
'No matching distribution found for %s' % req
DistributionNotFound: No matching distribution found for cron