title: What is the meaning of "-e ." in requirements.txt in aws cdk?
body: <p>I'm following this <a href="https://docs.aws.amazon.com/cdk/latest/guide/getting_started.html" rel="noreferrer">AWS CDK python getting started tutorial</a> to learn how to use AWS CDK with python.</p>
  
  <p>I'm curious about the meaning of <code>-e .</code> in <code>requirements.txt</code> file, which is generated by AWS CDK. What does it mean?</p>
  
  <p>The document from <code>pip install --help</code> says <code>-e, --editable &lt;path/url&gt;   Install a project in editable mode (i.e. setuptools "develop mode") from a local project path or a VCS url.</code>. </p>
  
  <p>I don't think the <code>-e</code> in requirements.txt means <code>--editable</code>. It must represents something different.</p>
  
  <p>I cannot find any explanations about <code>-e .</code> in requirements.txt in <a href="https://pip.pypa.io/en/stable/user_guide/#requirements-files" rel="noreferrer">https://pip.pypa.io/en/stable/user_guide/#requirements-files</a>.</p>
  
  <p>What does <code>-e .</code> mean in <code>requirements.txt</code> file?</p>