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基本Turtle语句

import turtle turtle.showturtle() turtle.write("Welcome to Python") turtle.forward(100) turtle.backward(100) turtle.color('red') turtle.penu...

2020-07-14

0 573

Simple Python Built-in Functions

>>>ord('a') - ord('A') 32 >>>chr(98) 'b' #chr(code ) function return the character represent by the code >>> str(98...

2020-07-14

0 597

homework of numerical solution of PDEs

Problem set find the numerical solution of the following partial differential equation: 1.C - N Scheme %二阶波动方程的CN格式 A=[0,-1;-1,0;]; I=[1,0;0,...

2020-07-14

0 650

SOR

MODULE Global_data !Symbolic names for kind types of single- and double-precision reals: INTEGER, PARAMETER :: SP = KIND(1.0) INTEGER, PARAMET...

2020-07-14

0 461

[cv]Fourier-transform

Basis Sets 生成向量空间V的最小基向量集合。 image can be regarded as an 1D vector. sin signal Asin(wx+ψ) 三个自由度， A，w， ψ . time a...

2020-07-13

0 499