# HackerRank Validating Postal Codes solution in python

In this Validating Postal Codes problem, you are just required to check whether string P is a valid postal code or not.

## Problem solution in Python 2 programming.

```# Enter your code here. Read input from STDIN. Print output to STDOUT

k = a[2:]
m = zip(a,k)
n = [a == b for (a,b) in m]
return sum(n) > 1

a = raw_input()
try:
b = int(a)
print b >= 100000 and b <= 999999 and not bad(a)
except:
print False```

## Problem solution in Python 3 programming.

```def inn(p):
return 100000 <= int(p) <= 999999

def imm(p):
l = []
for i in range(len(p) - 2):
l.append(p[i] != p[i + 2])

return all(l)

def is_valid(p):
return (p.isdigit() and inn(p)) and (p != "110000")# and imm(p)

def main():
p = input()
print(is_valid(p))

main()```

### Problem solution in pypy programming.

```# Enter your code here. Read input from STDIN. Print output to STDOUT
import re

print bool(re.match(r'^(?!(?:.*(.).\1.*){2,})(?!.*(.)(.)\2\3)[1-9]\d{5}\$', raw_input()))```

### Problem solution in pypy3 programming.

```import re

contain_6_digits = lambda x: bool(re.fullmatch(r'\d{6}', x))

alternate_digits = lambda x: len(re.findall(r'(\d)\1{1}', x[::2])) + len(re.findall(r'(\d)\1{1}', x[1::2])) < 2

tests = [contain_6_digits, alternate_digits]

s = input()
print(all(map(lambda x: x(s), tests)))```