Password Validation ?

1.Lowercase to Uppercase converter:

text=input("Enter some words :")
i=0
upper=""
while i<len(text):
    ch=text[i]
    if ch>="a" and ch<="z":
        upper=upper+chr(ord(ch) - 32)
    else:
        upper=upper+ch
    i+=1
print(upper)

2.First letter Only uppercase:

text=input("Enter some words :")
i=0
upper=""
while i<len(text):
    ch=text[i]
    if (ch>="a" and ch<="z") and (text[i-1]==" " or i==0):
        upper=upper+chr(ord(ch) - 32)
    else:
        upper=upper+ch
    i+=1
print(upper)

3.Letters Count :

text=input("Enter some words :")
i=0
count=0
while i<len(text):
    ch=text[i]
    if (ch>="a" and ch<="z") or (ch>="A" and ch<="Z"):
        count+=1
    i+=1
print(count)

4.Word Count :

text=input("Enter some words :")
i=0
count=1
while i<len(text):
    if text[i]!=" " and text[i-1]==" ":
        count+=1
    i+=1
print(count)

5.Password Validation :

text = input("Create your password: ")

upper = False
lower = False
number = False
special = False
valid = True

i = 0
while i < len(text):
    ch = text[i]

    if "A" <= ch <= "Z":
        upper = True
    elif "a" <= ch <= "z":
        lower = True
    elif "0" <= ch <= "9":
        number = True
    elif ch in "!@#$&":
        special = True
    else:
        valid = False

    i += 1

if len(text) < 8:
    print("Password must be at least 8 characters")

else:
    if not valid:
        print("Only allowed special characters: ! @ # $ &")

    if not upper:
        print("Add at least one uppercase letter")

    if not lower:
        print("Add at least one lowercase letter")

    if not number:
        print("Add at least one number")

    if not special:
        print("Add at least one special character: ! @ # $ &")

    if upper and lower and number and special and valid:
        print("Password successfully created")