import random

# s_char for small letters

s_char = "abcdefghijklmnopqrstuvwxyz"

# b_char for capital letters

b_char = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"

# d_char for digits

d_char = "123456789"

class Otp:

def __init__(self, len):

self.len = len

# this method generate number otp

@property

def digits(self):

num = 0

result = []

while num < self.len:

rand_choice = "".join(random.choices(d_char, k=self.len)[0:1])

result.append(rand_choice)

num += 1

value = "".join(result)

return value

# this method generate number and capital letters otp

@property

def bd_digits(self):

num = 0

result = []

while num < self.len:

b_choice = "".join(random.choices(b_char, k=self.len)[0:1])

d_choice = "".join(random.choices(d_char, k=self.len)[0:1])

result.append(b_choice)

result.append(d_choice)

num += 1

value = "".join(result[0 : self.len])

return value

# this method generate number and small letters otp

@property

def sd_digits(self):

num = 0

result = []

while num < self.len:

s_choice = "".join(random.choices(s_char, k=self.len)[0:1])

d_choice = "".join(random.choices(d_char, k=self.len)[0:1])

result.append(s_choice)

result.append(d_choice)

num += 1

value = "".join(result[0 : self.len])

return value

# this method generate both small, capital letters and number otp all together

@property

def sbd_digits(self):

num = 0

result = []

while num < self.len:

s_choice = "".join(random.choices(s_char, k=self.len)[0:1])

b_choice = "".join(random.choices(b_char, k=self.len)[0:1])

d_choice = "".join(random.choices(d_char, k=self.len)[0:1])

result.append(s_choice)

result.append(b_choice)

result.append(d_choice)

num += 1

value = "".join(result[0 : self.len])

return value

print("OTP:" + Otp(10).digits)