ATM machines allow 4 or 6 digit PIN codes and PIN codes cannot contain anything but exactly 4 digits or exactly 6 digits.
If the function is passed a valid PIN string, return true, else return false.
Examples (Input --> Output)
"1234" --> true
"12345" --> false
"a234" --> false
Sample Tests
import codewars_test as test
from solution import validate_pin
@test.describe("Fixed Tests")
def fixed_tests():
@test.it("should return False for pins with length other than 4 or 6")
def basic_test_cases():
test.assert_equals(validate_pin("1"),False, "Wrong output for '1'")
test.assert_equals(validate_pin("12"),False, "Wrong output for '12'")
test.assert_equals(validate_pin("123"),False, "Wrong output for '123'")
test.assert_equals(validate_pin("12345"),False, "Wrong output for '12345'")
test.assert_equals(validate_pin("1234567"),False, "Wrong output for '1234567'")
test.assert_equals(validate_pin("-1234"),False, "Wrong output for '-1234'")
test.assert_equals(validate_pin("-12345"),False, "Wrong output for '-12345'")
test.assert_equals(validate_pin("1.234"),False, "Wrong output for '1.234'")
test.assert_equals(validate_pin("00000000"),False, "Wrong output for '00000000'")
@test.it("should return False for pins which contain characters other than digits")
def _():
test.assert_equals(validate_pin("a234"),False, "Wrong output for 'a234'")
test.assert_equals(validate_pin(".234"),False, "Wrong output for '.234'")
@test.it("should return True for valid pins")
def _():
test.assert_equals(validate_pin("1234"),True, "Wrong output for '1234'")
test.assert_equals(validate_pin("0000"),True, "Wrong output for '0000'")
test.assert_equals(validate_pin("1111"),True, "Wrong output for '1111'")
test.assert_equals(validate_pin("123456"),True, "Wrong output for '123456'")
test.assert_equals(validate_pin("098765"),True, "Wrong output for '098765'")
test.assert_equals(validate_pin("000000"),True, "Wrong output for '000000'")
test.assert_equals(validate_pin("123456"),True, "Wrong output for '123456'")
test.assert_equals(validate_pin("090909"),True, "Wrong output for '090909'")
Solution- ###Python
def validate_pin(pin):
if(type(pin) != str or len(pin) not in [4, 6]):
return(False)
for c in pin:
if c not in "0123456789":
return(False)
return(True)
Top comments (0)