Python Password Generator

random_password_gen.py

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+import random
+import math
+
+alpha = "abcdefghijklmnopqrstuvwxyz"
+num = "0123456789"
+special = "@#$%&*"
+
+# pass_len=random.randint(8,13)  #without User INput
+pass_len = int(input("Enter Password Length"))
+
+# length of password by 50-30-20 formula
+alpha_len = pass_len//2
+num_len = math.ceil(pass_len*30/100)
+special_len = pass_len-(alpha_len+num_len)
+
+
+password = []
+
+
+def generate_pass(length, array, is_alpha=False):
+    for i in range(length):
+        index = random.randint(0, len(array) - 1)
+        character = array[index]
+        if is_alpha:
+            case = random.randint(0, 1)
+            if case == 1:
+                character = character.upper()
+        password.append(character)
+
+
+# alpha password
+generate_pass(alpha_len, alpha, True)
+# numeric password
+generate_pass(num_len, num)
+# special Character password
+generate_pass(special_len, special)
+# suffle the generated password list
+random.shuffle(password)
+# convert List To string
+gen_password = ""
+for i in password:
+    gen_password = gen_password + str(i)
+print(gen_password)