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with open('abc.txt','r') as f: balabalabala 等价于 try: f = open('abc.txt','r') except: pass else: balabalabala finally: f.close() 语法是不是简洁多了?

首先在scripts文件夹下面创建一个 btn.py 文件,里面内容是: import maya.cmds as mc def btn(): btn=mc.button(l="maya") 然后你再执行下面的代码,看看效果吧 import maya.cmds as mc import btn as mm win=mc.window() mc.columnLayout() mm...

你把grid_y的值打出来看一下,这里提示的错误说grid_y是个浮点数

用isinstance判断 #py3def is_int(x): if isinstance(x,int): print("True") else: print("false")a= 1.0is_int(a)

import os,urllib.request,re os.chdir(r'd:') data = urllib.request.urlopen(url).read() with open(filename, 'wb') as f: f.write(data) url就是你要下载的文件链接,filename就是下载后保存的文件名。这段代码是把文件下载在d盘根目录下,...

感觉是你这个安装的文件不正常。一般都会安装到C:/PythonXX/site-packages里面。 如果这个文件确实不存在,可能没安装好matplotlib。或者安装地质不在一块。看看安装的时候是否出什么错了。刚搜了一下是否在windows下有更简易的安装法,...

import math as mpi = math.pir = float(raw_input("r > "))h = float(raw_input("h > "))v = (1/3) * pi * r * r * hprint "%.4f"%v如果只是输出4位小数的话,如果要函数返回就return float("%.4f"%v)吧

asarray就是可以将list,tuple之类的转换成array 区别不是很大

我准备是python 2.7import Tkinter as tkimport sysdef exit1(): sys.exit()root = tk.Tk()root.title('世界')root.geometry('400*200')btn = Button(root, text = "click me to exit", command = exit1 )btn.pack(expand = YES, fill = BOTH)ro...

python3.3.2中的关键字如下: The following identifiers are used as reserved words, or keywords of the language, and cannot be used as ordinary identifiers. They must be spelled exactly as written here: False class finally is ret...

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