_st.py

str = "shivprasad"

print(len(str))# len() - Find String Length

print(str.upper())#. upper() & lower() - Change Case
print(str.lower())
print(str.title())
print(str.swapcase())

print(str.strip())# strip() - Remove Whitespace
print(str.lstrip())
print(str.rstrip())

new_text = str.replace("shiv","attitude")#shiv replace with attitudeprasad
print(new_text)# replace() - Replace Substring
text =" apple apple apple "
print(text.replace("apple","orange"))#Apple replace with orange

str1 ="shivprasad is programmer"# split() - Split String into List
words =str1.split()
print(words)

str2 =['shiv','prasad','coder']#join() - Join List into String
sentence =" ".join(str2)
print(sentence)