Question

您好，我想知道python是否有可能从数字前的字符串中提取单词。

例如：

Hi my name is hazza 50 test test test

Hi hazza 60 test test test

hazza 50 test test test

如果可能的话，我想让数字前的单词而不是之后的单词。

Hi my name is hazza

Hi hazza

hazza

问候比萨饼

Answer 1

正则表达式可以

import re

strings = '''
Hi my name is hazza 50 test test test

Hi hazza 60 test test test

hazza 50 test test test

hazza test test test
'''

for s in re.findall('([a-zA-Z ]*)\d*.*',strings):
    print(s)

给予

Hi my name is hazza 

Hi hazza 

hazza 

hazza test test test

Answer 2

is_digit = False
str = "Hi my name is hazza 50 test test test"
r = 0

for c in str:
  if c.isdigit():
     # is_digit = True
     r = str.index(c)

print(str[0:r-2])

r是5的索引 r-2，因为您希望字符串在50之前没有空格

阅读：https://www.learnpython.org/

Answer 3

s = "Hi my name is hazza 50 test test test"
result = ""
for i, char in enumerate(s):
    if char.isdigit():
        result = s[:i]
        break
print(result)

Answer 4

此实现将允许您提取字符串中每个数字之前的所有单词集。

s = '50 Hi hazza 60 test test 70 test'
# Split string on spaces
split = s.split()
# Instantiate list to hold words
words = []
curr_string = ''
for string in split:
    # Check if string is numeric value
    if string.isnumeric():
        # Catch edge case where string starts with number
        if curr_string != '':
            # Add curr_string to words list -- remove trailing whitespace
            words.append(curr_string.strip())
            curr_string = ''
    else:
        # If string not numeric, add to curr_string
        curr_string += string + ' '

print(words)

输出： ['Hi hazza', 'test test']

从数字Python之前的字符串中提取单词

4 个答案: