main.py

## Diamon

def main():
    n = int(input(f"Input any number : "))
    a = build_diamond(n)
    result = []
    for i in a:
        result.append([ str(n) if n > 0 else " " for n in i ])
    
    for i in result:
        print(''.join(i))

def build_diamond(num):
    """
    Build a diamond stack
    """
    mat = []    
    line_pattern = build_revert_array_apply(num, lambda i: num - i)
    for n in line_pattern:
        mat.append(build_revert_array_apply(num, lambda i: i - n))
    return mat

def build_revert_array(n):
    """
    Build revert array like 5 = 123454321
    """
    a = []
    for i in range(1, n + 1):
        a.append(i)
    for i in range(n - 1, 0, -1):
        a.append(i)
    return a

def build_revert_array_apply(n, op):
    """
    Build revert array and apply some function
    """
    a = build_revert_array(n)
    b = []
    for i in a:
        b.append(op(i))
    return b

if __name__ == "__main__":
    main()