I am trying to extract sentence segments with numbers in it. For example, the string

"This is a sentence with numbers, and this is not a sentence with numbers because 123.

should return

"and this is not a sentence with numbers because 123.

I know that there are ways to extract digits from a string, but I am not sure how to find the indices and subsequently extract the required string. Any help is appreciated

CodePudding user response：

This should work for the given question, but as commented, the question has room for errors and assumptions.

import re

test = "This is a sentence with numbers, and this is not a sentence with numbers because 123"

for t in test.split(','):
    num = re.findall(r'\d ', t)
    if num:
        print(t)

CodePudding user response：

first split text with "." ,but "1.2" will be spilted . so we use \.(?!\d)|(?<!\d)\. ,it means ". that left is not a number or right is not a number"

import re

text = "Test 1.2,Test A.1 Test,3 Test 4."

for t in re.split(r'\.(?!\d)|(?<!\d)\.|,', text):
    num = re.findall(r'\d ', t)
    if num:
        print(t)

CodePudding user response：

Comment:

I would take the whole string, split it into substrings based on characters that indicate a new substring (like . , ! ?, etc..). Then scan each substring for a number and return it, only if it contains a number. You could also use the re module to split the string.