如何在Python中从文件中读取数字？

如何在Python中从文件中读取数字？

假设您没有多余的空格：

with open('file') as f:    w, h = [int(x) for x in next(f).split()] # read first line    array = []    for line in f: # read rest of lines        array.append([int(x) for x in line.split()])

您可以将最后一个for循环压缩为嵌套列表推导：

with open('file') as f:    w, h = [int(x) for x in next(f).split()]    array = [[int(x) for x in line.split()] for line in f]