每天一点python：正则表达式中的findall方法

 

举例：使用findall获取所有匹配的正则表达式文本，然后逐一替换。

#! python3
"""
A regular expression example: find all matched text using findall()
"""
import re

text = "The ADJECTIVE panda walked to the NOUN and then VERB. A nearby NOUN was unaffected by these events. "

# Match ADJECTIVE,NOUN or VERB. Independent object relative to the text to be matched
wordRegex = re.compile(r'(ADJECTIVE|NOUN|VERB)')
# Pass the target text into a method of the regex object
#  findall(): return a list of all matched texts
matches = wordRegex.findall(text) 
for match in matches:
    # Get input from command line
    newWord = str(input("Enter a {}:".format(match.lower())))
    # Replace matched text with newWord, repalce only once, for the first one.
    text = text.replace(match, newWord, 1)

print(text)