Python中如何去除re.split()结果列表元素的左右空白

Hey there! Let's sort out that whitespace issue you're running into when splitting your string. Here are a couple of simple, effective ways to get your desired data_2 = ['2,000', '3,000'] result:

Method 1: Clean Up Split Results with List Comprehension + strip() #

This approach takes your existing split result and removes whitespace from each element individually. strip() is a string method that removes leading/trailing whitespace (spaces, tabs, newlines, etc.):

import re

data_1 = ' 2,000/3,000 '
# Your initial split
split_data = re.split('/', data_1)
# Clean each element with strip()
data_2 = [item.strip() for item in split_data]
print(data_2)  # Output: ['2,000', '3,000']

Method 2: Split with Regex That Handles Whitespace Directly #

Instead of splitting first then cleaning, you can adjust your regex pattern to account for whitespace around the / separator. This way, the split operation itself returns clean elements:

import re

data_1 = ' 2,000/3,000 '
# Split on "/" with any amount of whitespace before/after
data_2 = re.split(r'\s*/\s*', data_1.strip())
print(data_2)  # Output: ['2,000', '3,000']

The \s* matches zero or more whitespace characters, and we call strip() on the original string first to get rid of any leading/trailing whitespace outside the split elements.

Method 3: Skip Regex Entirely (Since Your Separator is Simple) #

If you're only splitting on a single / character, you don't even need regex—Python's built-in string split() method works just fine. Pair it with the same list comprehension trick:

data_1 = ' 2,000/3,000 '
data_2 = [item.strip() for item in data_1.split('/')]
print(data_2)  # Output: ['2,000', '3,000']

Quick Note on Your Previous Attempt #

When you tried split(data2), that didn't work because split() is a method that belongs to strings, not lists. You need to apply it to each string inside the list, which is exactly what the list comprehension does.

内容的提问来源于stack exchange，提问作者sayditto