codeRose Python(六) 高阶函数 1.map/reduce map()函数接收两个参数,一个是函数,一个是Iterable,map将传入的函数依次作用到序列的每个元素,并把结果作为新的Iterator返回。 把函数f(x)=x*x作用于一个list序列 deff(x):returnx*x r=map(f,[1,2,3,4,5,6])print(list(r)) 控制台输出结果: [1, 4...
Python(一)函数 在Python中,定义一个函数用def语句,依次些函数名、括号、括号中的参数和冒号:,然后在缩进块中编写函数体,函数的返回值用return语句返回。 1.自定义函数 自定义一个比较两个数大小的函数,返回最大值。 defmaxnum(x,y):ifx>y:returnxelifx==y:return'两数相等'else:returnyprint(maxnum(2,2...
we want to track the outputs Sep 20, 2022 .pre-commit-config.yaml [pre-commit.ci] pre-commit autoupdate May 6, 2025 CHANGELOG.md Fix issue where sectors showed a straight line instead of a curved Apr 22, 2024 CODE_OF_CONDUCT.md ...
These constants make our code more # readable when accessing the coordinates in these lists. X = 0 Y = 1 Z = 2 def line(x1, y1, x2, y2): """Returns a list of points in a line between the given points. Uses the Bresenham line algorithm. More info at: https://en.wikipedia.or...
先来试试一个简单的错误。def foo(): 1/0 foo()不使用PrettyErrors库，报错信息长这样：倒是...
display.set_caption("ViatorSun CodeRain") clock = pygame.time.Clock() group = pygame.sprite.Group() group_count = int(SCREEN_WIDTH / FONT_NOM) #mainloop while True : time = clock.tick(FREQUENCE) for event in pygame.event.get() : if event.type == QUIT : pygame.quit() exit() ...
mode):fp=open(filename,mode)try:yieldfpfinally:fp.close()withmake_open_context('/tmp/a',...
I am building a TfidfVectorizer as part of my model, and I realize the processing I need might have to be entered after this stage but I am not sure how to do this. My eventual aim is to do topic modelling on a piece of text. Here is the piece of code (borrowed almost directly...
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configure: creating Makefile configure: If you want a release build with all stable optimizations active (PGO, etc), please run ./configure --enable-optimizations Next, we need to compile the code and install Python with the following commands: ...