list comprehension of a nested for loop

Question

Unable to transform the following nested for loop to a list comprehension:

for row in rows:
    elements = row.strip().split('\t')
    for element in elements:
        print(element)

Input Data is tab delimited:

ola    olb    olc    old
ole    olf    olg    olh
oli    olj    olk    olk
oll    olm    oln    ooo

Desired Output:

ola
olb    
olc    
old
ole    
olf    
olg    
olh
oli    
olj    
olk    
olk
oll    
olm    
oln    
ooo

Paul Rooney · Accepted Answer · 2015-07-14 04:49:20Z

2

Like this

with open('tabdelim.txt') as rows:
    lstcmp = [item for row in rows for item in row.strip().split('\t')]
    print('\n'.join(lstcmp))

answered Jul 14, 2015 at 4:05

Paul Rooney

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Comments

NightShadeQueen · Accepted Answer · 2015-07-14 04:09:57Z

0

sum([row.strip().split('\t') for row in rows],[])

The builtin sum is very useful for flattening a list of lists.

answered Jul 14, 2015 at 3:43

NightShadeQueen

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