""" 
one website has the following password requirements
1. length at least 8 chars but not longer than 15
2. has at least one letter
3. has at least one digit

write a function valid_password(str) that takes one string parameter
returns True if its a valid password, and False otherwise

write a function random_str(size,min, max) that randomly generates a string of size 
characters, with ASCII values between min and max inclusive

write main to test function valid_password and random_str

"""
import random
def random_str(size,min, max):
	new_str=""
	for i in range(size):
		num=random.randint(min,max) #new_str+=(chr)(random.randint(min,max))
		char=(chr)(num)
		new_str=new_str+char
	return new_str

def valid_password(str):
	size=len(str)
	rule1=(size>=8 and size<=15)
	count_letter=0
	count_digit=0
	if(rule1==True):
		for item in str:
			if(item.isalpha()):
				count_letter+=1
			elif(item.isdigit()):
				count_digit+=1
		if(count_letter>0 and count_digit>0):
			return True
		else:
			return False
	else:
		return False



def main():
	"""
	str=random_str(10,32,126)
	print(str)
	low_letters=random_str(10,97,122)
	upper_letters=random_str(10,65,90)
	print(low_letters, upper_letters)
	"""
	"""
	if(valid_password(str)):
		print(str,"is valid password")
	else:
		print(str,"is not valid")

	if(valid_password(low_letters)):
		print(low_letters,"is valid password")
	else:
		print(low_letters,"is not valid")
	"""
	"""
	str1=random_str(10,32,126)
	print(str1)
	if(valid_password(str1)):
		print(str1,"is valid password")
	else:
		print(str1,"is not valid")
	"""
	str=input("enter string ")
	if(valid_password(str)):
		print(str,"is valid password")
	else:
		print(str,"is not valid")
	

main()