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nums = [5,12,7,9,21,7,14]
count_seven = nums.count(7)
print("数字7出现的次数:",count_seven)
if 99 not in nums:
	nums.append(99)
print("添加99后的列表:",nums)

Success #stdin #stdout 0.07s 14116KB

stdin

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Standard input is empty

stdout

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数字7出现的次数: 2
添加99后的列表: [5, 12, 7, 9, 21, 7, 14, 99]

https://ideone.com/xIQyD7

language:

Python 3 (python 3.12)

created:

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public

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