Total memory used by Python process?

Here is a useful solution that works for various operating systems, including Linux, Windows, etc.:

import os, psutil
process = psutil.Process(os.getpid())
print(process.memory_info().rss)  # in bytes 

Notes:

• do pip install psutil if it is not installed yet

• handy one-liner if you quickly want to know how many MB your process takes:

  import os, psutil; print(psutil.Process(os.getpid()).memory_info().rss / 1024 ** 2)
  

• with Python 2.7 and psutil 5.6.3, it was process.memory_info()[0] instead (there was a change in the API later).