In [1]:

    

l = ['oneXXXaaa', 'twoXXXbbb', 'three999aaa', '000111222']


    

In [2]:

    

l_in = [s for s in l if 'XXX' in s]
print(l_in)


    

    




['oneXXXaaa', 'twoXXXbbb']

In [3]:

    

l_in_not = [s for s in l if 'XXX' not in s]
print(l_in_not)


    

    




['three999aaa', '000111222']

In [4]:

    

l_replace = [s.replace('XXX', 'ZZZ') for s in l]
print(l_replace)


    

    




['oneZZZaaa', 'twoZZZbbb', 'three999aaa', '000111222']

In [5]:

    

l_replace_all = ['ZZZ' if 'XXX' in s else s for s in l]
print(l_replace_all)


    

    




['ZZZ', 'ZZZ', 'three999aaa', '000111222']

In [6]:

    

l_start = [s for s in l if s.startswith('t')]
print(l_start)


    

    




['twoXXXbbb', 'three999aaa']

In [7]:

    

l_start_not = [s for s in l if not s.startswith('t')]
print(l_start_not)


    

    




['oneXXXaaa', '000111222']

In [8]:

    

l_end = [s for s in l if s.endswith('aaa')]
print(l_end)


    

    




['oneXXXaaa', 'three999aaa']

In [9]:

    

l_end_not = [s for s in l if not s.endswith('aaa')]
print(l_end_not)


    

    




['twoXXXbbb', '000111222']

In [10]:

    

l_lower = [s for s in l if s.islower()]
print(l_lower)


    

    




['three999aaa']

In [11]:

    

l_upper_all = [s.upper() for s in l]
print(l_upper_all)


    

    




['ONEXXXAAA', 'TWOXXXBBB', 'THREE999AAA', '000111222']

In [12]:

    

l_lower_to_upper = [s.upper() if s.islower() else s for s in l]
print(l_lower_to_upper)


    

    




['oneXXXaaa', 'twoXXXbbb', 'THREE999AAA', '000111222']

In [13]:

    

l_isalpha = [s for s in l if s.isalpha()]
print(l_isalpha)


    

    




['oneXXXaaa', 'twoXXXbbb']

In [14]:

    

l_isnumeric = [s for s in l if s.isnumeric()]
print(l_isnumeric)


    

    




['000111222']

In [15]:

    

l_multi = [s for s in l if s.isalpha() and not s.startswith('t')]
print(l_multi)


    

    




['oneXXXaaa']

In [16]:

    

l_multi_or = [s for s in l if (s.isalpha() and not s.startswith('t')) or ('bbb' in s)]
print(l_multi_or)


    

    




['oneXXXaaa', 'twoXXXbbb']