Skip a specified number of columns with numpy.genfromtxt() python 3.4 error

问题

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)))

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

回答1:

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

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

Then there would be no need for fancy operations

来源：https://stackoverflow.com/questions/29720430/skip-a-specified-number-of-columns-with-numpy-genfromtxt-python-3-4-error