Python:
the password must have at least 8 characters with at least one lowercase, one uppercase and one digit character. the program should repetitively ask user for a password till the entered password meets the specifications. then the program should ask the user to confirm the password; if it could not be confirmed then the whole process should start from the beginning.

# this program to set a password.

# this function returns true if the string s has

# no lowercase character otherwise returns false.

def nolowercase(s) :

upper_s = s. upper()

if s == upper_s :

return true

else :

return false

# this function returns true if the string s has

# no uppercase character otherwise returns false.

def nouppercase(s) :

lower_s = s. lower()

if s == lower_s :

return true

else :

return false

# this function returns true if the string s has

# no digit character otherwise returns false.

def nodigit(s) :

if s. count("0") > 0 :

return false

elif s. count("1") > 0 :

return false

elif s. count("2") > 0 :

return false

elif s. count("3") > 0 :

return false

elif s. count("4") > 0 :

return false

elif s. count("5") > 0 :

return false

elif s. count("6") > 0 :

return false

elif s. count("7") > 0 :

return false

elif s. count("8") > 0 :

return false

elif s. count("9") > 0 :

return false

else :

return true

# program to set a password.

# the password must have more than 8 characters

# with at least one uppercase, at least one lowercase

# and at least one digit character.

def main() :

print("this program will set your password.")

password_not_set = true

while password_not_set :

password = input("enter a password: ")

while : # complete the condition

print("password not allowed.")

print("must be longer than 8 characters with")

print("at least one lowercase, one uppercase and one digit.\n")

password = input("enter another password: ")

password_confirm = input("reenter to confirm the password.")

if : # complete the condition

print("password did not match, set another password.")

else :

# complete

print("your password has been set.")

main()