Python

File organization structure:__init____init__. Py└──t2 ├──b.py __init__. pya.pydef Test (): Print ' t.t1.a.test () 'b.pydef Test (): Print ' t.t2.b.test () 'Perform:Python t/main.pyQuestion 1:In main.py, how do you write the test method

#Encoding:utf-8Importretemp="want to do/concurrently _/student _/, plus, I q:8 8. 8 8. ！！？？ 8 8. 8.8. 8 Yes, surprise, Hi, oh"Temp= Temp.decode ("UTF8") String= Re.sub ("[\s+\.\!\/_,$%^* (+\ "\ ']+|[ +--! ，。？ , [email protected]#￥%......&* ()]+".

__call__in Python, a function is actually an object:>>> f =ABS>>> F.__name__'ABS'>>> F (-123)123because F can be called, F is called a callable object. All functions are callable objects. An instance of a class can also become a callable object,

Exception handlingAttributeerror attempts to access a tree that does not have an object, such as foo.x, but Foo has no attribute xIOError input/output exception; Basically, the file cannot be openedImporterror cannot introduce modules or packages;

Operator Arithmetic operators: +-*///(divisible)% (take more) * * 123456789101112131415 >>> 1+12>>> 1-10>>> 1*11>>> 1/11.0>>> 1//11>>> 5%21>>> 2**24>>> Assignment operators: =, + =,-=, *=,/=,%=,//=, **=

Problem: Remove unwanted characters at the beginning, end, or middle of the string, for example, whitespaceSolution:1. The character is removed at the beginning or end of the string: Str.strip ()2. Remove characters from left or right start:

The main topic of this lesson Python first Hello World program combat Python requires user input in combat Python Import Module Python formatting Conditional judgment expression real-combat Expression for loop combat Job

The introduction adorner is essentially a Python function that allows other functions to add extra functionality without any code changes, and the return value of the adorner is also a function object. It is often used in scenarios where there is a

__cmp__when sorting built-in data types such as int, str, Python's sorted () is sorted by the default comparison function CMP, but if you sort an instance of a group of Student classes, you must provide our own special method__cmp__():classStudent

Ii. History of PythonThird, Python 2 or 3?The difference between the number of system bits 32 bits and 64 bits32bit = maximum addressable space for memory is 2**32, 4GB64bit, =2**64 but actually does not support this great memory, 2**4x, the largest

Problem: Finding and replacing text in a case-insensitive wayWORKAROUND: Use the RE module and add the re to the various operations. IgnoreCase Marktext='UPPER python,lower python,mixed PYTHON'print (Re.findall (' Python', Text,re.

1. Execute cmd commandSERVER:__author__='Alex'#Coding:utf-8ImportSocketImportSubprocessip_port= ('127.0.0.1', 8888) SK=Socket.socket () sk.bind (Ip_port) Sk.listen (5)Print("Server start ...") whiletrue:conn,addr=sk.accept () whileTrue:Try:

1. Login to the Super Star Mu class, chrome grab bag, simulate header, extract form hidden elements form the params.The main is the CAPTCHA image address, found in JS by Js->new date (). GetTime () timestamp dynamically generated Url,python

With...as is called the context Manager, which can perform certain operations when it enters the scope of an object and leaves. This operation is available on its ownSet.Write an example to learn:classTest ():def __init__(self): Self.text="Hello"

1. Install and upgrade GCCYum install gcc* OpenSSL openssl-devel ncurses-devel.x86_64 bzip2-devel sqlite-devel python-devel zlib2. Download the Python installation packagewget HTTPS://WWW.PYTHON.ORG/FTP/PYTHON/2.7.11/PYTHON-2.7.11.TAR.XZ3. UnzipXz-d

Introduction to jquery jquery is another excellent JavaScript library following prototype. It is a lightweight JS library, it is compatible with CSS3, also compatible with various browsers (IE 6.0+, ff1.5+, Safari 2.0+, Opera 9.0+), jQuery2.0 and

1. Directly on the codeserver:__author__='Alex'#Coding:utf-8ImportSocketip_port= ('127.0.0.1', 8000) SK=socket.socket () sk.bind (ip_port) sk.listen (5)Print("Server start ...") whiletrue:conn,addr=sk.accept () whileTrue:Try: Recv_data= Conn.recv (10

I. Review of the previous section1, Inline-blockThe default is 3px width2, Change the labelWeb small triangle creates visual effects Small triangle 3. img TagThe IMG border is displayed by default in ie, so set the boder=04.

Python exception handling and python exception Exception Handling AttributeError attempts to access a tree without an object, such as foo. x, but foo has no attribute xThe IOError input/output is abnormal. Basically, the file cannot be

Python3 basic data type, Python3 Data Type Variables in Python do not need to be declared. Each variable must be assigned a value before being used. A variable is created only after being assigned a value. In Python, a variable is a variable and has