csv文件的保存与读取

csv文件的保存与读取

	import numpy as np
	import pandas as pd

	# 保存数据到csv文件
    m = np.arange(16).reshape((4,4))
    data = pd.DataFrame(m)
    data.to_csv('demo.csv',header=False,index=False)
	
	# 从csv文件读取数据
    # skiprows=0不跳行， usecols=None读取所有列, unpack=False不转置
    a = np.loadtxt('demo.csv', dtype="float", delimiter=',', skiprows=2, usecols=None, unpack=False)
    print(a)