numpy 读取csv格式的数据

• 用np.loadtxt()读取

从某种意义来说，CSV文件属于txt文件

csv文件默认是以逗号分隔数据

用loadtxt读取到的数据存储形式类似二维数组

numpy.loadtxt(fname,dtype="int",delimiter=None,skiprows=0,usecols=None,unpack=False)

# -*- codeing = utf-8 -*-
import numpy as np

us_file_path = "./data/US_video_data_numbers.csv"  # 数据存储路径
t_us = np.loadtxt(us_file_path, delimiter=",", dtype="int")

实战：读取数据并可视化
看案例

• 用np.genfromtxt()读取

# -*- codeing = utf-8 -*-
import numpy as np

us_file_path = "./data/US_video_data_numbers.csv"  # 数据存储路径
t_us = np.genfromtxt(us_file_path, delimiter=",")