Password Generator

Password Generator.py

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+## UPDATE 2021 : Thought of changing this with better variables and optimizations 
+## but left it as it is , as a memoir for old *Me Coder*
+
+# import all the necesary libraries
+import os
+import shutil
+import math
+import itertools
+
+# the welcome function to be displayed at the beginning of the file
+def welcome():
+    # usig ascii color code
+    print("\033[40m")
+    print("\t\t\033[91m PyForCe")
+    print("\n\n\t\t\033[92m An \"Intelligent\" Dictionary Creation Tool")
+    print("\n\n\t\t\033[96m V1.0")
+
+def calculateBytes(x,r):    
+    bytes = x * (r + 1)
+    # dividing bytes by 1000 to get kb
+    # kbs = bytes / 1000
+    # print("Calculated Size in kbs : ",kbs)
+    return bytes
+
+def sizeOnhardDisk(freekb):
+    # size_on_disk = 0
+    if freekb < 4096:
+        sze = 1
+    else:
+        sze = round((freekb / 4096), 1)
+        szplit = str(sze).split(".")
+        sze = int(sze)
+        if int(szplit[1]) > 0:
+            sze = sze + 1
+        size_on_disk = ((sze * 4096) // 1000)
+    return size_on_disk
+
+# math function to calculate nCr
+def nCr(n,r):
+    f = math.factorial
+    x = f(n) / f(r) / f(n-r)
+    return x
+
+# the actual function that crates combinations
+def createcombs(words,i):
+    global f
+    # pass the string to be combined and length of password
+    for c in itertools.combinations(words,i):
+        t = "".join(c)
+        f.write(t + "\n")
+        # print(t)
+
+
+ # the function to check for available and empty disk space
+def checkdiskspace(passfilelength):
+    # returns a tuple
+    total, used, free = shutil.disk_usage("/")
+    # calculate the size in gigabits
+    freeGb = (free // (2**30)) - 1
+    pass_file_length_GB = (((passfilelength // 1024) // 1024) // 1024)
+    # just log codes
+    # print(freeGb," GB")
+    # print("length of pass file ", pass_file_length_GB, " GB")
+    # print(freeGb)
+    # print(pass_file_length_GB)
+    if freeGb - pass_file_length_GB > 1:
+        print(" \n\nEnough Available Disk Space\n Creating Password Dictionary...")
+    else:
+        print("\033[91m Your Device Doesn't Have Enough Disk Space..\n Quitting...")
+        # code to reset the color changes
+        print("\033[0m")
+        exit(0)
+
+# the function to check for valid Characters
+# feel free to add or remove characters as per requirements
+# if you don't want to check go to the main function and disable the function call
+def checkForCharacters(kword):
+    chars = "!@#$%^&*()_+-=?></\"';|~`,'"
+    for k in kword:
+        if k in chars:
+            print("\033[91m Alert Invalid Characters Found")
+            # code to reset the color changes
+            print("\033[0m")
+            # any special charcter found
+            # need to exit the code
+            return False
+        else:
+            pass
+            # print("ok")
+    return True
+
+
+# start the execution
+# only if this file is executed
+if __name__ == "__main__":
+    global f
+    # clear the console according to the OS
+    # didn't check it on windows yet
+    # :p
+    if os.name == "nt":
+        os.system("cls")
+    else:
+        os.system("clear")
+    # call the welcome function to show the welcome screen
+    welcome()
+
+    kwords = input("\n\n\033[34m Enter Keywords Related To victim Seperated By Commas \n > ")
+    klist = kwords.split(",")
+    kwords = "".join(klist)
+    # to change the minimum length change the value here
+    if len(kwords) <= 7:
+        # to less characters to create combinations
+        print("\033[91m Too Less Characters...")
+        # code to reset the color changes
+        print("\033[0m")
+        # hence exit
+        exit(0)
+    if checkForCharacters(kwords):
+        # every char is valid
+        # ask the length of password
+        password_Length = input("\n\n\033[34m Enter Password Length\n For More Values Seperate Them By Spaces > ")
+        # re assign the values to password_Length but as a list seperated
+        password_Length = password_Length.split(" ")
+        # check the list for any value to be less than 6 and greater than 12
+        # you can change the values in the loop below to achieve your desired length
+        # assuming that you will not flood the list with unneed values
+        # no checking for length or for duplicate values in the list
+        # -----
+        # converting the values of list (password_Length) to string
+        for i in range(0, len(password_Length)):
+            try:
+                password_Length[i] = int(password_Length[i])
+            except ValueError:
+                print("\033[91m Invalid Characters Found For \"Password Length\"")
+                # code to reset the color changes
+                print("\033[0m")
+                exit(0)
+        # after successfuly converting the values of list to integer
+        # check if each  value is less than 12 and greater than 6
+        for i in password_Length:
+            if int(i) < 6 or int(i) > 12:
+                print("\033[91m Enter Password Length To be less Than 12 And greater Than 6..")
+                # code to reset the color changes
+                print("\033[0m")
+                exit(0)
+        # now check for the no of possible combinations
+        temp = 0
+        tempkb = 0
+        for i in password_Length:
+            x = nCr(len(kwords), i)
+            kbs = calculateBytes(x,i)
+            temp = temp + x
+            tempkb = tempkb + kbs
+            # print(tempkb)
+        tempkb = int(tempkb)
+        print("\033[33m\n\n",int(temp)," Possible Items")
+        print("\033[33m Size It Will Take On HardDisk is ", sizeOnhardDisk(int(tempkb)), " Kb")
+        choice = input("\033[33m Would You Like To Continue (y/n) : ")
+        if choice == "y":
+        # createcombs(kwords)
+            checkdiskspace(tempkb)
+            f = open("passwords.txt", "w")
+            for i in password_Length:
+                createcombs(kwords,i)
+            print(" Created..")
+            # code to reset the color changes
+            print("\033[0m")
+        else:
+            exit(0)