title: how to download all the python packages mentioned in the requirement.txt to a folder in linux using python idle?
body: <p>I want to download all the python packages mentioned in the requirement.txt to a folder in Linux. I don't want to install them. I just need to download them.</p>
  <p>I want to write a python script that can download all the python packages.</p>
  <p>python version is 3.6</p>
  <p>list of packages in the requirement.txt</p>
  <pre><code>python-ldap==3.2.0
  python-libnmap==0.6.2
  python-otrs==0.4.3
  pytz==2015.4
  PyYAML==3.11
  query-string==0.0.2
  queuelib==1.2.2
  redis==2.10.3
  requests==2.22.1
  requests-aws4auth==0.9
  requests-oauthlib==0.5.0
  requests-toolbelt==0.5.0
  scp==0.10.2
  six==1.10.0
  South==1.0.1
  tlslite==0.4.9
  u-msgpack-python==2.1
  urllib3==1.14
  w3lib==1.12.0
  websockets==3.3
  Werkzeug==0.10.4
  xlrd==1.0.0
  XlsxWriter==1.0.5
  zope.interface==4.1.2
  GitPython==2.1.3
  </code></pre>