Find used python packages list needed to be installed (or used in requirements.txt)

find_packages.sh

grep -Rhs --color=never import . | awk '{print $2;}' | sort | uniq | xargs -I{} sh -c 'python -c "list(__import__(x) for x in filter(None, map(str.strip, '"'"'{}'"'"'.split('"'"','"'"'))))" 2>/dev/null || echo {}'

Result.example.log

GcsManager
Robot
WitInterface
WitResponse
XmppReporter
cjson
cloudsql
cloudsql.beans
cloudsql.dao
cloudsql.dao.dialogdao
cloudstorage
context
demoprotocol
dialogentrydao,historyentrydao,botuserdao
file
flask
flask.ext.babel
flask.json
flask_babel
geocoding
google.appengine._internal.django.utils
google.appengine.api
google.appengine.api.apiproxy_stub_map
google.appengine.api.app_identity
google.appengine.api.taskqueue
google.appengine.ext
google.appengine.ext.webapp
history
jsonpath_rw
langdetect
lazyawarejsonencoder
peewee
playhouse.shortcuts
plivogae
rtiprotocol
simplejson
smsinterface
spartanprotocol
speaklater
telegram
telegramInterface
tropointerface
twilio.twiml
useraddress
xmltodict
yaml

Also this solution can be used as alias in ~/.profile file for use as a command in your #bash.

Just drop these lines to your ~/.profile file and do . ~/.profile in current bash session to reload this file. After this you can use python.libraries command in your bash session.

_python_libraries () {
        grep -Rhs --color=never import . | awk '{print $2;}' | sort | uniq | xargs -I{} sh -c 'python -c "list(__import__(x) for x in filter(None, map(str.strip, '"'"'{}'"'"'.split('"'"','"'"'))))" 2>/dev/null || echo {}'
}
alias python.libraries='_python_libraries'