How can I Python parse string and split a string in Python?

General Discussions
1

How can I Python parse a string and split a string in Python?

I have the string 2.7.0_bf4fda703454, and I want to split it on the underscore (_) so that I can use the value on the left side.

How can I achieve this in Python?

2

You can use Python’s built-in split() method to easily separate the string at the underscore (_).

s = '2.7.0_bf4fda703454'
left_value = s.split('_')[0]
print(left_value)
3

The partition() method splits a string into three parts: the part before the separator, the separator itself, and the part after.

s = '2.7.0_bf4fda703454'
left_value, _, _ = s.partition('_')
print(left_value)
4

If you want more flexibility, you can use the re-module to parse and split the string.

import re

s = '2.7.0_bf4fda703454'
match = re.match(r'([^\_]+)_', s)
if match:
    left_value = match.group(1)
    print(left_value)

With the above method, you achieve the same result of parsing the string and extracting the left side before the underscore. These methods are appropriate for Python parse string tasks when you need to handle strings based on delimiters.