String Methods

Besides the primary string functions we've talked about, there are a few others you should be aware of.

isXXXX

The isxxxx() methods help perform checks on strings.

isalnum() checks if a string is alphanumeric



In [4]:

    
s = "turtle"



In [5]:

    
s.isalnum()









    Out[5]:





True

isalnum() checks if a string is alphabetic



In [6]:

    
s.isalpha()









    Out[6]:





True



In [7]:

    
y = "turtle3"
y.isalpha()









    Out[7]:





False

islower() checks if string characters are lower



In [8]:

    
y.islower()









    Out[8]:





True

isupper() for uppercase



In [14]:

    
y.isupper()

"Wow".isupper()

"WOW".isupper()









    Out[14]:





True

isspace() returns True if a string is all whitespace



In [11]:

    
" ".isspace()









    Out[11]:





True



In [15]:

    
"hello".partition("l")









    Out[15]:





('he', 'l', 'lo')



In [17]:

    
"hello".split()









    Out[17]:





['hello']



In [19]:

    
"hello".split("l")









    Out[19]:





['he', '', 'o']