使用numpy.genfromtxt()python 3.4错误跳过指定数量的列 [英] Skip a specified number of columns with numpy.genfromtxt() python 3.4 error

问题描述

import os
import numpy as np
import matplotlib.pyplot as plt

# Open a file
path = "input/"

filelist = list(filter(lambda s: s.endswith(".asc"), os.listdir(path)))
firstImage = np.genfromtxt (" ".join(ln.split()[1:]) for ln in path+next(iter(filelist)))

怎么了?得到:TypeError:无法将字节"对象隐式转换为str

what is wrong? getting: TypeError: Can't convert 'bytes' object to str implicitly

推荐答案

查看该函数的文档，似乎能够开箱即用地进行各种疯狂的事情:

Check out the function's doc, it seems able to to all kinds of crazy things out of the box :

http://docs.scipy.org/doc/numpy/reference/generated/numpy.genfromtxt.html

包括但不限于使用usecols参数将允许您跳过使用某些列的操作.

Including but not limited to, using the usecols parameters would allow you to skip using some columns.

那么就不需要进行花哨的操作了

Then there would be no need for fancy operations

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