converting capital letters to lowercase and viceversa in python
s=input()
new_str=""
for i in range (len(s)):
if s[i].isupper():
new_str+=s[i].lower()
elif s[i].islower():
new_str+=s[i].upper()
else:
new_str+=s[i]
print(new_str)Python Program to count the number of lowercase letters and uppercase letters in a string.
string=raw_input("Enter string:")
count1=0
count2=0
for i in string:
if(i.islower()):
count1=count1+1
elif(i.isupper()):
count2=count2+1
print("The number of lowercase characters is:")
print(count1)
print("The number of uppercase characters is:")
print(count2)Copyright © 2021 Codeinu
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