ccpf

A CPF (brazilian register numbers for persons) library that can:

• Validate CPFs
• Generate random CPFs
• Apply and remove masks from CPFs
• Check if CPFs are masked

Install

Just do pip3 install ccpf and you are good to go.

How to use

After importing ccpf you can:

• generate() - Generate a random valid unmasked CPF.

import ccpf
cpf = ccpf.generate()
assert ccpf.validate(cpf)

• validate(cpf) - Validate if a string is a valid CPF. Works for masked and unmasked CPFs.

import ccpf
cpf = ccpf.generate()
assert ccpf.validate(cpf)

• has_mask(cpf) - Return wheter or not the given CPF is masked. If CPF format is invalid, it will raise a CPFInvalidFormat exception.

import ccpf
cpf = ccpf.generate()
assert not ccpf.has_mask(cpf)

• mask(cpf) - Return the masked version of the given CPF. If the CPF is already masked, just return it. If CPF format is invalid, it will raise a CPFInvalidFormat exception.

import ccpf
cpf = ccpf.generate()
assert not ccpf.has_mask(cpf)
masked = ccpf.mask(cpf)
assert ccpf.has_mask(masked)
masked2 = ccpf.mask(masked)
assert ccpf.has_mask(masked2)

• unmask(cpf) - Return unmasked version of the given CPF. If the CPF is already unmasked, just return it. If CPF format is invalid, it will raise a CPFInvalidFormat exception.

import ccpf
cpf = ccpf.generate()
assert not ccpf.has_mask(cpf)
unmasked = ccpf.unmask(cpf)
assert not ccpf.has_mask(unmasked)
masked = ccpf.mask(unmasked)
assert ccpf.has_mask(masked)
unmasked2 = ccpf.unmask(masked)
assert not ccpf.has_mask(unmasked2)

CPFInvalidFormat

A CPF may have a valid format, but be invalid:

• without mask but invalid:

invalid_cpf_with_right_format = '12345678901'
assert not ccpf.validate(invalid_cpf_with_right_format)
error = False
try:
    ccpf.unmask(invalid_cpf_with_right_format)
except ccpf.CPFInvalidFormat:
    error = True
finally:
    assert not error

• with mask but invalid.

invalid_cpf_with_right_format = '123.456.789-01'
assert not ccpf.validate(invalid_cpf_with_right_format)
error = False
try:
    ccpf.unmask(invalid_cpf_with_right_format)
except ccpf.CPFInvalidFormat:
    error = True
finally:
    assert not error

• CPFInvalidFormat will be raised when the format is invalid. It does not say whether the CPF itself is invalid or not.

cpf_with_wrong_format = 'thisisclearlynotinthecpfformat'
assert not ccpf.validate(cpf_with_wrong_format)
error = False
try:
    ccpf.unmask(cpf_with_wrong_format)
except ccpf.CPFInvalidFormat:
    error = True
finally:
    assert error

Run tests

Just execute tox by calling it:

tox