win10 python3.6.3 'pip package by mounting the numpy matplotlib' + 'simple demonstration'
| Small text structure | Quantity |
|---|---|
| A problem actually encountered | Two |
| Two mounting mat package with np | Five Steps |
| III. A simple demonstration | Two-step |
Problems encountered are as follows:
1.python not installed in the system tray, by 'pip install -U pip' can not upgrade directly pip
2. have not used pip Package Manager to install the new package
Case of a problem as follows:
Under reference predecessors by Baidu and share my last post solving process:
1. Press' win + R ', open the "Run" window, enter' in the window cmd ', open a command prompt serial
2. Enter' Python - ensurepip m 'pip to install the package
3. enter' Python -m -i https://pypi.doubanio.com/simple/ --upgrade the install pip pip 'pip update package
4. enter' pip the install --upgrade numpy 'installation numpy package (installation requires a few minutes), the installation is completed and then enter 'pip install --upgrade matplotlib' matplotlib installation package
5. at this point it is mounted with matplotlib numpy finished package, which may be introduced in the use of IDLE.
Let's write a simple code to try these two packages:
1. Open the shell python3.6.3, 'Ctrl + N ' Create a new file py
2. linspace take the point, and with pyplot display, F5 to run the code
# f(x) = x**2
# 实现函数f(x)=x**2,并画出图形
def f(x): #定义f(x)函数
return x**2
import numpy as np #导入numpy模块并别名np
x = np.linspace(-5,5,num = 100) #（-5，5）中平均取100个点
y = f(x)
import matplotlib.pyplot as plt #导入画图模块并别名为plt
plt.plot(x,y) #取点
plt.show() #显示
Incidental link:
1.python download HTTPS official website ::: //www.python.org/downloads/
2.python install the module's official website: https: //docs.python.org/zh-cn/3.6/installing/index. html
This is above all contents of this small article, thank you seniors convenience previous article provided, for the first time made the article, inadequate please a lot of guidance, thank you!
