Use a Config File to store User Credentials

import pandas as pd

from simple_salesforce import Salesforce

import os                                 # use os to navigate file structure
cwd = os.getcwd()                         # save the current working directory
os.chdir('/Users/ryanwingate/Documents/') # navigate to the directory where the config file is stored
import config                             # import the config file

sf = Salesforce(username=config.username,
                password=config.password,
                security_token=config.security_token)

os.chdir(cwd)                             # Restore the original working directory

desc = sf.describe()
objects = []
obj_labels = [obj['label']  for obj in desc['sobjects']]
obj_names  = [obj['name']   for obj in desc['sobjects']]
obj_custom = [obj['custom'] for obj in desc['sobjects']]
for label, name, custom in zip(obj_labels, obj_names, obj_custom):
    objects.append((label, name, custom))
objects = pd.DataFrame(objects,
                       columns = ['label','name','custom'])
print(str(objects.shape[0]) + ' objects')
objects.head(10);