CODEWITHSUNDEEP
pythonstring
bachurim09
bachurim09

Reputation: 1811

Checking string for conditions

Let's say I have a string, and I want to check a lot of conditions on this string. For example:

  1. It is of size x
  2. Has no white spaces
  3. The last letter is a numeric character

All of the conditions from 1-3 It can be done in a regular standard way in a function (if this and that etc')

But... How would I do that in one line in a good python style way?

Upvotes: 1

Views: 198

Answers (4)

Ashwini Chaudhary
Ashwini Chaudhary

Reputation: 250931

You can use a simple if condition with any:

s='fdsfgsgsfds9'
if len(s)==7 and not any(c.isspace() for c in s) and s[-1].isdigit():
    pass

Upvotes: 7

Andrew Clark
Andrew Clark

Reputation: 208455

It may be more complicated than it's worth, but you can check all of those conditions with a regular expression.

For example, if the size you wanted was 8 characters, you could use the following to check all three conditions:

if re.match(r'\S{7}\d$', text):
    print 'all conditions match'

Upvotes: 5

Tim Pietzcker
Tim Pietzcker

Reputation: 336128

One way would be to use a regular expression (assuming an x of 10):

if re.match(r"\S{10}(?<=\d)$", mystring):
    # Success!

Upvotes: 4

murgatroid99
murgatroid99

Reputation: 20267

Try something like

import re
def test(s):
    return len(s)>=x and re.match("^\S*\d$", s)

This will test whether the string has length of at least x and that it is a sequence of non-space-characters followed by a digit character at the end.

Upvotes: 1

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