汇总文件中的数字

Question

myfile = open("file.txt")
lines = myfile.readlines
myfile.close

I am stuck here, having problems sum up numbers in file. They are

12
23
34
45
56
67
42
9001

Answer 1

您可以将每行转换为整数，然后使用sum函数获得总和：

print(sum(map(int, open("file.txt"))))

Answer 2

This is a step by step process in order to achieve what you're asking for.

file = open("numbers.txt", "r") #read the file
file = file.read().splitlines() #create a list where each value is a line of the file
file = list(map(int, file)) #convert each of the values on the list to "int"
print(sum(file)) #sum all the values inside the list

1. You need to read the file
2. Create a list where each of the values is a line of the text
3. Convert all the values of the list to "int" as they're "inserted" as "str"
4. Sum all the values inside the list