此方法返回所有匹配子組的元組。
用法： re.MatchObject.groups()
返回：所有匹配子組的元組
AttributeError:如果找不到匹配的模式，則會引發AttributeError。
考慮以下示例：
範例1：
Python3
import re
"""We create a re.MatchObject and store it in
match_object variable
the '()' parenthesis are used to define a
specific group"""
match_object = re.match(r'(\d+)\-(\w+)\-(\w+)',
'498-ImperialCollege-London')
""" d in above pattern stands for numerical character
w in above pattern stands for alphabetical character
+ is used to match a consecutive set of characters
satisfying a given condition so w+ will match a
consecutive set of alphabetical characters
d+ will match a consecutive set of numerical characters
"""
# generating the tuple with all matched groups
detail_tuple = match_object.groups()
# printing the tuple
print(detail_tuple)輸出：
('498', 'ImperialCollege', 'London')
現在是時候了解上述程序了。我們使用re.match()方法在給定的字符串('498-ImperialCollege-London')中找到匹配項，其中'w'表示我們正在搜索字母字符，而'+'表示我們正在搜索連續的字母字符。給定的字符串。類似地，d +將匹配一組連續的數字字符。請注意，括號中使用'()'來定義不同的子組，在上麵的示例中，匹配模式中有三個子組，得到的結果是re.MatchObject存儲在match_object變量中。
範例2：如果未找到匹配對象，則引發AttributeError。
Python3
import re
"""We create a re.MatchObject and store it in
match_object variable
the '()' parenthesis are used to define a
specific group"""
match_object = re.match(r'(\d+)\-(\w+)\-(\w+)',
'1273984579846')
""" w in above pattern stands for alphabetical character
+ is used to match a consecutive set of characters
satisfying a given condition so 'w+' will match a
consecutive set of alphabetical characters
"""
# Following line will raise AttributeError exception
print(match_object.groups())輸出：
Traceback (most recent call last):
File "/home/6510bd3e713a7b9a5629b30325c8a821.py", line 18, in
print(match_object.groups())
AttributeError:'NoneType' object has no attribute 'groups'
相關用法
注：本文由純淨天空篩選整理自haridarshanc大神的英文原創作品 re.MatchObject.groups() function in Python – Regex。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。