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I have a huge file containing the following lines DDD-1126N|refseq:NP_285726|uniprotkb:P00112 and DDD-1081N|uniprotkb:P12121, I want to grab the number after uniprotkb.
Here's my code:
x = 'uniprotkb:P'
f = open('m.txt')
for line in f:
print line.find(x)
print line[36:31 + len(x)]
The problem in line.find(x) is 10 and 26, I grab the complete number when it is 26. I'm new to programming, so I'm looking for something to grab the complete number after the word.
x = 'uniprotkb:'
f = open('m.txt')
for line in f:
if x in line:
print the number after x
922
Python String isnumeric() Method The isnumeric() method returns True if all the characters are numeric (0-9), otherwise False. Exponents, like ² and ¾ are also considered to be numeric values. "-1" and "1.5" are NOT considered numeric values, because all the characters in the string must be numeric, and the - and the .
Use regular expressions:
import re
for line in open('m.txt'):
match = re.search('uniprotkb:P(\d+)', line)
if match:
print match.group(1)
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