print(",".join(["meena","raja","karthik"]))

print("hello hi".replace("hi","world!"))

print("start with that function".startswith("start"))

print("ends with that function".endswith("function"))

print("abcdefghijklmnopqrstuvwxyz".upper())

print("ABCDEFGHIJKLMNOPQRSTUVWXYZ".lower())

print("raja,meena,karthik".split(","))

8b90f64fa90acdd537cfe60df12953db2f7be18e
<mask token>

print(','.join(['meena', 'raja', 'karthik']))
print('hello hi'.replace('hi', 'world!'))
print('start with that function'.startswith('start'))
print('ends with that function'.endswith('function'))
print('abcdefghijklmnopqrstuvwxyz'.upper())
print('ABCDEFGHIJKLMNOPQRSTUVWXYZ'.lower())
print('raja,meena,karthik'.split(','))

print(",".join(["meena","raja","karthik"]))

print("hello hi".replace("hi","world!"))

print("start with that function".startswith("start"))

print("ends with that function".endswith("function"))

print("abcdefghijklmnopqrstuvwxyz".upper())

print("ABCDEFGHIJKLMNOPQRSTUVWXYZ".lower())

print("raja,meena,karthik".split(","))
