CODEWITHSUNDEEP
pythonregex
Captain Cretaceous
Captain Cretaceous

Reputation: 821

Regular Expression - Python - Remove Leading Whitespace

I search a text file for the word Offering with a regular expression. I then use the start and end points from that search to look down the column and pull the integers. Some instances (column A) have leading white-space I do not want. I want to print just the number (as would be found in Column B) into a file, no leading white-space. Regex in a regex? Conditional?

price = re.search(r'(^|\s)off(er(ing)?)?', line, re.I)
if price:
    ps = price.start()
    pe = price.end()

             A             B
           Offering       Offer
            56.00         55.00 
            45.00         45.55
            65.222        32.00

Upvotes: 4

Views: 10790

Answers (3)

ankit2saxena
ankit2saxena

Reputation: 21

'^\s+|\s+$'

Use this to regular expression access leading and trailing whitespaces.

Upvotes: 2

kbsri harsha
kbsri harsha

Reputation: 31

If you want to remove only the leading white spaces using regular expressions, you can use re.sub to do that. 

>>> import re
>>>re.sub(r"^\s+" , "" , "  56.45")
'56.45'

Upvotes: 1

NPE
NPE

Reputation: 500297

You could use strip() to remove leading and trailing whitespaces:

In [1]: ' 56.00  '.strip()
Out[1]: '56.00'

Upvotes: 9

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