Marvin_Wind的博客

Numpy练习 import numpy as np a = np.array([1,2,3,4,5]) b = np.array(range(1,6)) c = np.arange(1,6) 数组类名 type(a) type(b) type(c) numpy.ndarray 数据类型 a.dtype dtype('int32') b.dtype dtype('int32') c...

import pandas as pd import numpy as np from matplotlib import pyplot as plt df = pd.read_csv('/Users/PycharmProjects/newwork/BeijingPM20100101_20151231.csv') df.head(3) No ...