Python Interpreter Setup

.pythonrc.py

"""
Custom evironment setup for the python interpreter

Usage:
1. Save to ~/.pythonrc (name doesn't matter, *rc is just convention)
2. Point the PYTHONSTARTUP environment variable to your file; e.g. for bash, add
   the following to your ~/.bashrc or ~/.profile:
       export PYTHONSTARTUP=~/.pythonrc
"""

### enable tab completion
import rlcompleter, readline
readline.parse_and_bind("tab: complete")

### import custom python utilities
import sys
from os.path import expanduser
# I keep my custom_utils.py in my home directory, but put it where you want and update the path here
sys.path.append(expanduser('~'))
from custom_utils import *

custom_utils.py

"""
Some handy utilities, especially nice for Python CLI work
"""

from math import ceil

def chunk(size, _iter):
  """ split an iterable into chunks of the given size """
  _num_groups = range(int(ceil(len(_iter)/float(size))))
  return (_iter[n*size:(n+1)*size] for n in _num_groups)

def P(obj, key=None):
  """
  List the public properties of an object, optionally
  filtered by a `key` function
  """
  props = [p for p in dir(obj) if p[0] is not '_']
  if key is not None:
    props = [p for p in props if key(p)]
  return props

def PT(obj, key=None):
  """
  List an object's public properties in a 4-col table,
  optionally filtered by a `key` function
  """
  _p = P(obj, key=key)
  if filter is not None:
    _max_w = max(len(p) for p in _p)

  print('\n'.join(''.join(n.ljust((_max_w/4 + 2)*4) for n in c) for c in chunk(4, P(obj))))

pdbrc.py

"""
Environment setup for pdb, the python debugger

Usage: Save to ~/.pdbrc
"""

### enable tab completion
import rlcompleter                                                              
import pdb                                                                      
pdb.Pdb.complete = rlcompleter.Completer(locals()).complete  

### import custom python utilities
import sys
from os.path import expanduser
# I keep my custom_utils.py in my home directory, but put it where you want and update the path here
sys.path.append(expanduser('~'))
from custom_utils import *