如何在python中将浮点列表转换为int; err int（）参数必须是字符串，类似字节的对象或数字，而不是“列表”

Question

I'm trying to convert my list of floats to ints, but I keep getting the error int() argument must be a string, a bytes-like object or a number, not 'list'

This is my code, and values is the list in floats.

values = [my_random() for x in range(num_trials)]
vals_to = [int(x*100) for x in values]

and I'm doing this in jupyter notebook. When I try samples they turn out fine, but I'm so confused on why this particular code of list is giving me this error. Can someone please point me in the right direction?

Answer 1

First, you need to make sure that your function my_random() returns a float number.

Anyway, let's say you have a list of float numbers

mylist = [3.1415, 74.2, 345.03, 98.9]

There are many ways to achieve your task. For example,

res = [int(i) for i in mylist] # 1 List comprehension
res = list(map(int, mylist)) # 2 Map

For more control on how to round each number, you can use math

import math

res = list(map(math.ceil, mylist)) # Round up
res = list(map(math.floor, mylist)) # Round down