4-3-1-2 文字列の消去
①lstrip
w_str = " hello "
new_str = w_str.lstrip()
print(new_str)
->'hello '
②strip
w_str = " hello "
new_str = w_str.lstrip()
print(new_str)
->' hello'
③rstrip
w_str = " hello "
new_str = w_str.lstrip()
print(new_str)
->'hello'