Installing in a virtual environment

On Windows

Streamlit's officially-supported environment manager on Windows is Anaconda Navigator.

Follow the steps in this section of the Anaconda "Getting Started" page
Click the "▶" icon next to your new environment and then "Open terminal":
In the terminal that appears, type:
```
pip install streamlit
```
Test that the installation worked:
```
streamlit hello
```
Streamlit's Hello app should appear in a new tab in your web browser!

In Anaconda Navigator, open a terminal in your environment (see step 2 above).
In the terminal that appears, use Streamlit as usual:
```
streamlit run myfile.py
```

Streamlit's officially-supported environment manager on Mac and Linux is pip. See instructions on how to install and use it below.

On a Mac, that's:

sudo easy_install pip

If you use Ubuntu and Python 3, that's:

sudo apt-get install python3-pip

For other Linux distributions, see this guide.

Go to the folder where your project will live:
```
cd myproject
```
Create a new Pipenv environment in that folder:
```
python -m venv venv
```
When you run the command above, a directory called venv will appear in myprojects/. This directory is where your Python environment and dependencies are installed.
Activate your environment:
```
source ./venv/bin/activate
```
Install Streamlit in your environment:
```
pip install streamlit
```
Test that the installation worked:
```
streamlit hello
```
Streamlit's Hello app should appear in a new tab in your web browser!

Any time you want to use the new environment, you first need to go to your project folder (where the venv directory lives) and run:
```
source ./venv/bin/activate
```
Now you can use Python and Streamlit as usual:
```
streamlit run myfile.py
```