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Hi All,

Can someone please explain the below code?I am mainly interested in the lambda function lambda x: '{0:0>10}'.format(x). Thanks.

## Add leading zeros to the integer column in Python
 
df['Col1']=df['Col1'].apply(lambda x: '{0:0>10}'.format(x))
print df

TIA

lambda x: '{0:0>10}'.format(x) creates a string that has length at least 10. if what you pass as parameter has length less than 10 it will left-fill it with 0s.
e.g. if you have value of 1 in Col1, it will become '0000000001'

(Jul-04-2018, 10:10 AM)buran Wrote: [ -> ]lambda x: '{0:0>10}'.format(x) creates a string that has length at least 10. if what you pass as parameter has length less than 10 it will left-fill it with 0s.
e.g. if you have value of 1 in Col1, it will become '0000000001'

Thanks Mate. How does the following code {0:0>10} actually work? Is there any documentation on this syntax?

(Jul-04-2018, 10:15 AM)mrcool4 Wrote: [ -> ]Is there any documentation on this syntax?

https://docs.python.org/3/library/string...ing-syntax
Format Specification Mini-Language can be used not only with str.format() but with f-strings in 3.6+ too

(Jul-04-2018, 10:22 AM)buran Wrote: [ -> ]

(Jul-04-2018, 10:15 AM)mrcool4 Wrote: [ -> ]Is there any documentation on this syntax?

https://docs.python.org/3/library/string...ing-syntax
Format Specification Mini-Language can be used not only with str.format() but with f-strings in 3.6+ too

Thank you..