python ocr library

10 Python standard library concise tutorial Table of Contents 1. Operating System Interface 2. File wildcards 3. Command Line Parameters 4. Error output redirection and program termination 5 String Matching 6. Mathematics 7. Internet access 8. Date and Time 9. Data Compression 10 Performance Measurement 11 Quality Control 1. Operating System Interface OSThe module provides a series of modules fo

One, C level module add APIWe still operate on the following structures,#include The objective of this section is to encapsulate the two-point struct's operation function as the C-level API of sample library, which can be called by C library other than sample, first write the following function pointer struct instance,/* pysample.c */static pyobject *pypoint_frompoint (point *p, int must_free) { /* capsule

0x00 Network1) General purposeUrllib-Network library (STDLIB).Requests-Network library.grab– Network library (based on Pycurl).pycurl– Network Library (binding Libcurl).Urllib3–python HTTP library, secure connection pool, support file post, high availability.httplib2– Networ

Python install PiL (python Imaging Library) tips [python] view plain copy could not find a version of that satisfies the requirement PIL (from versions:) No mat Ching distribution found for PiLStart with [python] view plain copy sudo pip install PiL always prompts the abov

next cycle , select () no longer indicates that the socket is ready to send data For S in writable:TryNext_msg=message_queues[s].get_nowait ()Except Queue.empty:Print >>sys.stderr, ', S.getpeername (), ' Queue empty 'Outputs.remove (s)ElsePrint >>sys.stderr, ' sending%s to%s '% (Next_msg,s.getpeername ())S.send (NEXT_MSG)# Finally, if a socket has an error, closeFor S in exceptional:Print >>sys.stderr, ' exception condition on ', S.getpeername ()Inputs.remove (s)If s in outputs:Outputs.remove (

which such objects are ordered is random but will always be consistent. when any one operand is a complex number, the, =, > , and > = operators throw TypeError exception. Non-identical instances of a class are typically not equal unless the class defines the __eq__ () or __cmp__ () method.An instance of a class cannot typically be sorted with other instances of the same class or other types of objects unless the class defines a sufficiently rich comparison method (__ge__ (),__le__ (),__gt__

PyQuery is a Python library similar to jQuery. it can also be said that it is implemented by jQuery in Python. it can use jQuery syntax to parse HTML documents. it is easy to use and fast to parse. for example The code is as follows: Director: Tom tykwe/Larna vdrosky/Andy vdroskskiScriptwriter: Tom ticwe/Andy wozowski/Larna wojoskyStarring: tom Hanks/Haly Berr

Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--> # ! /Usr/bin/ENV Python # Coding = UTF-8 # ------------------------------------------------------------------------------- # Name: simple function drawing class # Version: v0.1 # Author: mapig (http://mapig.cnblogs.com QQ: 33221979) # Power: generate simple function Images # Creation: # Standby Note:

You need to test something under fedora, so you don't want to use the python that comes with your system, you need to compile one yourself. After compiling, need to install PIP,PIP need setuptools, and setuptools need zlib library, in executing./configure--help./configure--prefix=~/.local/python2. 7 --with-zlibIt's very strange not to see the--with-zlib option, but this option is still used, and the fact is

How to see where Python is installed:Enter where Python+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++PYC file:PYC is a binary fileWhen the py file is import as a module, Python is designed to improve parsing speed. A compile-like action is made on all the py files that act as modules.Python will no long

1 ImportSYS2 3 from_winregImport*4 5 #tweak as necessary6Version = Sys.version[:3]7InstallPath =Sys.prefix8Regpath ="software\python\pythoncore\%s\\"%(version)9Installkey ="InstallPath"TenPythonkey ="PythonPath" OnePythonpath ="%s;%s\lib\;%s\dlls\\"% ( A InstallPath, InstallPath, InstallPath - ) - the defRegisterpy (): - Try: -Reg =Openkey (HKEY_CURRENT_USER, Regpath) - exceptEnvironmentError as E: + Try: -Reg =CreateKey (HKEY_C

Introduction to Python standard library multi-process (multiprocessing package), python multi-process After learning about Python multi-process, we can continue to explore more advanced tools in the multiprocessing package. These tools make it easier for us to implement multi-process. Process pool A Process Pool can cr

/wKiom1krk3uDvc4uAAHwAzVpCmE726.png "title=" Image013.png "alt=" Wkiom1krk3udvc4uaahwazvpcme726.png "/>5. Shelve module:python A simple storage data solution650) this.width=650; "src=" Https://s2.51cto.com/wyfs02/M02/97/3E/wKioL1krk46wY84kAABeaTQnwwc529.png "title=" Image014.png "alt=" Wkiol1krk46wy84kaabeatqnwwc529.png "/>Ten, Time module: shows the elapsed times from that to present, which can be used to calculate elapsed time or display the current time650) this.width=650; "src=" Https://s3.5

　　Turtle: Turtle (Turtle pool)The Turtle Library is a very popular function library for drawing images in the Python language .You need to import the library before using: Import Turtle? Turtle.setup (Width,height,startx,starty)-setup () setting the position and size of the formThe coordinates of the starting point r

Python standard library inspect, python standard inspect The inspect module is used to collect python object information and obtain the parameter information of the class or function, the source code, the Parsing Stack, And the type check of the object. There are several useful methods: Getargspec (func) Returns an Arg

numeric Type- int, float, long, complex There are four different numeric types: ordinary integers, long integers, floating-point numbers, and complex numbers A normal integer (or short integer) is implemented using a long in C with a precision of at least 32 bits (Sys.maxint is always set to the maximum normal integer value of the current platform, and the minimum value is -sys.maxint - 1). long integers have infinite precision. floating-point numbers are usually implemented with a double in C

General: Urllib-Network library (STDLIB). Requests-Network library. grab– Network library (based on Pycurl). pycurl– Network Library (binding Libcurl). Urllib3–python HTTP library, secure connection pool,

Vamei source: Http://www.cnblogs.com/vamei Welcome reprint, Please also keep this statement. Thank you!Python has a very useful standard library. The standard library will be installed in your computer along with the Python interpreter. It is a part of Python. These standard

X). py2exe– the Python script into a stand-alone package (Windows). pynsist– a tool used to create Windows installer to package the Python itself in the Setup program. Build tools Compile the source code into software. buildout– a build system that creates, assembles, and deploys applications from multiple components. bitbake– build tools for embedded Linux similar to make. fabricate– build tools that auto

WHERE salesrep=%s‘, ‘John Doe‘) for row in cursor: print("ID=%d, Name=%s" % (row[‘id‘], row[‘name‘]))Call a stored procedurepymssql 2.0.0 versions above can cursor.callproc invoke stored procedures by means of methods With pymssql.connect (server, user, password, database) as Conn:with conn.cursor (as_dict=True) as cursor:#create a stored procedureCursor.execute ("""CREATE PROCEDURE Findperson @name VARCHAR as BEGIN SELECT * from persons WHERE name = @name END""") #call a stored proced