#Write a function valid_license that has 1 parameter -  
#string of characters that represents license plate. 
#The function returns True if the license plate is valid and False otherwise

#The rules of valid license plate:
#1. the license plate is at least 4 characters long and no more than 7 characters long
#2. the lisence plate consists of digits and letters only. 

#Example 1: if the parameter is: NJNK123BHY
#the function returns False 

#Example 2: if the parameter is : 123&9
#the function returns False

#Example 3: if the parameter is: nkKu189
#the function returns True 

#Example 4: f the parameter is: NJ1Kp
#the function returns True

#Write a function count_valid, that has one parameter - list of license plates
#The function finds and returns the number of valid licenses in the list 
#and the new list that consists of valid lincenses ONLY

#Write main that reads the size of the list, generates the list of licenses from user input
#and finds the number of valid licenses in the list and prints all valid lincenses 

#For example, if the input list is:
#[NJ67-B, PAu*12, 78Jo, NJ907-kl, P999UK]
#the output: 
#2 valid licenses
#list of valid: [78Jo, P999UK]

#the program is partially written for you but you can write your own

def valid_license(plate):

def count_valid(my_list):

def main():
	my_list=[]
	size=int(input("enter the number of plates in the list "))
	for i in range(size):
		my_list.append(input("enter license plate "))
	print("original list is ")
	print(my_list)
	
	#complete the program
main()