Python–从给定的元组列表中过滤所有大写字符元组
原文:https://www . geesforgeks . org/python-filter-全大写字符-元组-来自给定元组列表/
给定元组列表，过滤包含所有大写字符的元组。
输入:test _ list =[(' GFG '，' IS '，' BEST ')，(' GFG '，' AVERAGE ')，(' GFg '，' CS ')] 输出 : [('GFG '，' IS '，' BEST')] 解释:只有 1 个元组全大写字符串。
输入:test _ list =[(“GFG”、“iS”、“BEST”)、(“GFG”、“AVERAGE”)、(“GFg”、“CS”)] 输出 : [] 解释 : No 有全大写的 Strings。
方法#1:使用循环
在这种情况下，我们对每个元组进行迭代，并检查每个字符串是否都是大写的，如果不是，则从新的元组中省略该元组。
Python 3
# Python3 code to demonstrate working of
# Filter uppercase characters Tuples
# Using loop
# initializing list
test_list = [("GFG", "IS", "BEST"), ("GFg", "AVERAGE"), ("GFG", ), ("Gfg", "CS")]
# printing original list
print("The original list is : " + str(test_list))
res_list = []
for sub in test_list:
res = True
for ele in sub:
# checking for uppercase
if not ele.isupper():
res = False
break
if res:
res_list.append(sub)
# printing results
print("Filtered Tuples : " + str(res_list))
Output
The original list is : [('GFG', 'IS', 'BEST'), ('GFg', 'AVERAGE'), ('GFG', ), ('Gfg', 'CS')]
Filtered Tuples : [('GFG', 'IS', 'BEST'), ('GFG', )]
方法 2:使用列表理解+ all() + isupper()
在本文中，我们使用 all()检查所有大写字符串，列表理解提供了问题的紧凑解决方案。isupper()用于检查大写字母。
Python 3
# Python3 code to demonstrate working of
# Filter uppercase characters Tuples
# Using list comprehension + all() + isupper()
# initializing list
test_list = [("GFG", "IS", "BEST"), ("GFg", "AVERAGE"), ("GFG", ), ("Gfg", "CS")]
# printing original list
print("The original list is : " + str(test_list))
# all() returns true only when all strings are uppercase
res = [sub for sub in test_list if all(ele.isupper() for ele in sub)]
# printing results
print("Filtered Tuples : " + str(res))
Output
The original list is : [('GFG', 'IS', 'BEST'), ('GFg', 'AVERAGE'), ('GFG', ), ('Gfg', 'CS')]
Filtered Tuples : [('GFG', 'IS', 'BEST'), ('GFG', )]
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