def removeElement(self, nums, val):
"""
:type nums: List[int]
:type val: int
:rtype: int
"""
length = len(nums)
result = 0
for i in range(length):
if nums[i] == val:
continue
else:
nums[result] = nums[i]
result += 1
return result
答案:用len函数。#例子
def myf(*arr):#可变形参*arr
result=(sum(arr) if len(arr)>=2 else type(arr))#缩进4空,若参数组长度≥2,返回sum(arr),否则返回type(arr)
return result#缩进4空
print(myf(1,2,0.3))#返回3.3
print(myf(1,6))#返回7
print(myf())#返回<class 'tuple'>