Converting a string (with scientific notation) to an int in Python

Question

I'm trying to convert a set of strings from a txt file into int's within a list. I was able to find a nice snippet of code that returns each line and then I proceeded to try and convert it to an int. The problem is that the numbers are in scientific notation and I get this error: ValueError: invalid literal for int() with base 10: '3.404788e-001'.

This is the code I've been messing around with

data = []
rawText = open ("data.txt","r")

for line in rawText.readlines():
    for i in line.split():
        data.append(int(i))

print data[1]
rawText.close()

Answer 1

Use float(i) or decimal.Decimal(i) for floating point numbers, depending on how important maintaining precision is to you.
float will store the numbers in machine-precision IEEE floating point, while Decimal will maintain full accuracy, at the cost of being slower.
Also, you can iterate over an open file, you don't need to use readlines() .
And a single list comprehension can do everything you need:

data = [float(number)
        for line in open('data.txt', 'r')
        for number in line.split()]

If you really only need integers, you can use int(float(number))

Answer 2

你的字符串看起来像一个float ，所以首先将它转换为float 。