How to profile and debug python script

profile-and-debug.py

##################################################
# profiler:

# https://docs.python.org/2/library/profile.html
# python -mcProfile -o profiler.out ./something.py

### profile.py ###
import pstats
p = pstats.Stats('profiler.out')
p.sort_stats('cumtime').print_stats(20)
p.sort_stats('time').print_stats(20)
p.print_stats ('lambda|filter')

# python profile.py

##################################################
# debugger:

# https://docs.python.org/2/library/pdb.html
# python -mpdb ./something.py

# help
# b main
# n
# pp options
# bt
# c

##################################################
# code coverage:

# python -mtrace --count ./something.py
# coverage in something.cover