Python virtualenv Virtual Environment

In Python2 and Python3 co-existence of the machine to do development, want to not interfere with each other, virtual environment is very important.

Debian7 default is python2.7.3, install python3.4.1 after how to establish virtual environment?

pyvenv myVenv

$ source Myvenv/bin/activate

You can then install the program in a virtual environment. Such as:

Install Pymongo

Exit the virtual Environment:

Note Python3 brought pyvenv, with this on the line, the former virtualenv myVenv--python=python3 always error.

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Python virtualenv Virtual Environment