Something wrong with the colon in a for loop (runtime error/ syntax error)-CodePudding

I am a coder in Leetcode, and it says I'm wrong with a colon on a for loop. This is my code:

class Solution:
def twoSum(self, nums: List[int], target: int) -> List[int]:
    strnums = []
    for i in strnums: strnums  = str(i)
    for n1 in range(1, len(nums)   1)：
        for n2 in range(1, len(nums) 1):
            if nums[n1] == nums[n2]
                pass
            elif n1   n2 == target:
                print(nums[n2])
            else:
                pass

there is something wrong with line 5 and 6,

will anyone help me?

CodePudding user response：

Line 4

for i in strnums: strnums  = str(i)

strnums is empty, this loop will not iterate.

Line 7

 if nums[n1] == nums[n2]

missing colon at the end of the if statement.

CodePudding user response：

Multiple colons are missing and the indentation is also missing in multiple places. Python is sensitive to indentation. The body of the for-loop, function, class, etc must be indented from its declaration:

class Solution:
    def twoSum(self, nums: List[int], target: int) -> List[int]:
        strnums = []
        for i in strnums: 
            strnums  = str(i)
            for n1 in range(1, len(nums)   1):
                for n2 in range(1, len(nums) 1):
                if nums[n1] == nums[n2]:
                    pass
                elif n1   n2 == target:
                    print(nums[n2])
                else:
                    pass