while True: line = obj.stdout.readline() if line: print(line.decode('utf-8')) obj = subprocess.Popen("python3 -i", shell=True, stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE) t1 = threading.Thread(target=user_input, args=(obj,)) t1.start() while True: code ...
尝试在 Python 解释器中将一个数字除以零: >>>10/0Traceback (most recent call last): File"<stdin>", line1,in<module> ZeroDivisionError: integer divisionormodulo by zero 因此,我们可以使用try-except块重写这个脚本: try: answer =10/0exceptZeroDivisionError, e: answer = eprintanswer 这将返回错误整...
Phew, deleted at last. You might have guessed what saved __del__ from being called in our first attempt to delete x. Let's add more twists to the example.2.>>> x = SomeClass() >>> y = x >>> del x >>> y # check if y exists <__main__.SomeClass instance at 0x7f98a1...
第1 章 起步 1-1 python.org:浏览Python主页(http://python.org/),寻找你感兴趣的主题。你对Python越熟悉,这个网站对你来说就越有用。 1-2 输入错误:打开你刚创建的文件hello_world.py,在代码中添加一个输入错误,再运行这个程序。输入错误会引发错误吗?你能理解显示的错误消息吗?你能添加一个不会导致错误...
AltDelete 删除选定的运行/调试配置。 请注意,您无法删除默认配置。 Ctrl0D 创建选定运行/调试配置的副本。 请注意,您创建的是默认配置的副本。 仅当您选择一个 临时配置时才会显示该按钮。 点击此按钮,将临时配置保存为永久配置。 移入新建文件夹/新建文件夹。 您可以通过 将它们放入文件夹来对运行/调试配置进行...
last(1) lastcomm(1) lbxproxy(1) ld(1) ld(1g) ld.so.1(1) ld86(1) ldapadd(1) ldapdelete(1) ldaplist(1) ldapmodify(1) ldapmodrdn(1) ldapsearch(1) ldd(1) lefty(1) less(1) lessecho(1) lesskey(1) let(1) lex(1) lftp(1) lftpget(1) lgrpinfo(1) libgd2(1) libnetcfg(...
>>>importpdb>>>importmymodule>>>mymodule.test()Traceback(most recent call last):File"",line1,inFile"./mymodule.py",line4,intesttest2()File"./mymodule.py",line3,intest2print(spam)NameError:spam>>>pdb.pm()>./mymodule.py(3)test2()->print(spam)(Pdb) ...
text you’re typing. The most immediately useful of these are the commands to delete entire lines of text. You’ll know these have become second nature if you find yourself using a combination of Ctrl-b and Ctrl-d instead of reaching for the Backspace key to delete the previous character...
Python Env Wrapper is a set of commands to manage multiplevirtual environments. Pew can create, delete and copy your environments, using a single command to switch to them wherever you are, while keeping them in a single (configurable) location. ...
The last two are of the bytes type. Unicode text to search, containing the Tamil digits for 1729 (the logical line continues until the right parenthesis token). This string is joined to the previous one at compile time (see “2.4.2. String literal concatenation” in The Python Language Ref...