.strip in python what does it do code example

Example 1: python strip

txt = "  test    "

txt.strip()
#Output: "test"

txt.lstrip()
#Output: "test    "

txt.rstrip()
#Output: "  test"

Example 2: python strip

# removes outside whitespace/characters
'  hey  '.strip()     # "hey"
'  hey  '.lstrip()    # "hey  "
'  hey  '.rstrip()    # "  hey"
'_.hey__'.strip('._') # "hey"