How do I run Python 2 when Python 3 is installed?

How do I run Python 2 when Python 3 is installed?

No matter the order of “pythons” you can:

1. run Python 2. x scripts using the command: py -2 (Python 3. x functionality) (ie. the first Python 2.
2. run Python 3. x scripts using the command: or py -3 (ie. the first Python 3. x installation program found in your PATH will be selected)

How do I run Python 3 on Windows?

Python 3 Installation on Windows

1. Step 1: Select Version of Python to Install.
2. Step 2: Download Python Executable Installer.
3. Step 3: Run Executable Installer.
4. Step 4: Verify Python Was Installed On Windows.
5. Step 5: Verify Pip Was Installed.
6. Step 6: Add Python Path to Environment Variables (Optional)

Can I install both python 2 and 3 on Windows?

Now in command line you can use python for 2.7 and python3 for 3.4. From version 3.3 Python introduced Launcher for Windows utility https://docs.python.org/3/using/windows.html#python-launcher-for-windows. So to be able to use multiple versions of Python: install Python 2.

Why is Python 3 unable to import installed libraries?

Means that your Python 3 kernel is running in your conda root environment, not the ipykernel_py3 environment you created. If it was in that environment, it you would see something like /Users/Chris/anaconda3/envs/ipykernel_py3/bin/python.

How to run Python 2 code in Python 3?

This will translate, import and run Python 2 code such as the following: The attributes of the module are then accessible normally from Python 3. For example: This is a standard Python 3 data type, so, when called from Python 3 code, keys () returns a view, not a list:

Is there an urllib module in Python 3?

Urllib on Python 3 is also available in modules such as urllib.request and urllib.error so you can import them to get similar functionality to python 2.

How to import Python 2 code into Python 3?

This is implemented using PEP 414 import hooks together with fixers from lib2to3 and libfuturize (included with python-future) that attempt to automatically translate Python 2 code to Python 3 code with equivalent semantics upon import.