In Python is there any debug function equivalent to PHP's "print_r" or "var_dump"?

repr (Python 2) and reprlib (Python 3)

  

Produces a string representation of an object passed as   parameter.

pprint ()

  

Produce formatted output for the data.

Example (source: pymotw.com ):

from pprint import pprint

from pprint_data import data

print 'PRINT:'
print data
print
print 'PPRINT:'
pprint(data)
$ python pprint_pprint.py

PRINT:
[(0, {'a': 'A', 'c': 'C', 'b': 'B', 'e': 'E', 'd': 'D', 'g': 'G', 'f': 'F', 'h': 'H'}), (1, {'a': 'A', 'c': 'C', 'b': 'B', 'e': 'E', 'd': 'D', 'g': 'G', 'f': 'F', 'h': 'H'}), (2, {'a': 'A', 'c': 'C', 'b': 'B', 'e': 'E', 'd': 'D', 'g': 'G', 'f': 'F', 'h': 'H'})]

PPRINT:
[(0,
  {'a': 'A',
   'b': 'B',
   'c': 'C',
   'd': 'D',
   'e': 'E',
   'f': 'F',
   'g': 'G',
   'h': 'H'}),
 (1,
  {'a': 'A',
   'b': 'B',
   'c': 'C',
   'd': 'D',
   'e': 'E',
   'f': 'F',
   'g': 'G',
   'h': 'H'}),
 (2,
  {'a': 'A',
   'b': 'B',
   'c': 'C',
   'd': 'D',
   'e': 'E',
   'f': 'F',
   'g': 'G',
   'h': 'H'})]

These PHP functions are output / writing on screen functions, where var_dump has the peculiarity of displaying information about the variable.

To get a good approximation of the var_dump function, you can use both Python and Python > 3:

print(vars(a))

As noted by @Miguel, vars () only works if "a" has attribute dict , which is a dictionary or mapping of an object that stores attributes of that object, if it is integer or string, eg , no longer gives.

You can use Python's debugger > :

#!python3

'''
    Exemplo de uso do debugger do Python
'''
#Importa a biblioteca PDB
import pdb
#Inicie seu programa
objeto = "maçã"

#Ponto onde o debugger vai começar a exibir informação sobre o programa
pdb.set_trace()
sujeito = "Mauricio"
verbo = "gosta"

frase = sujeito + " " + verbo + " " + objeto

print(frase)