think python 2nd edition

#模块#包#模块中有什么Dir L List features#文档Print range.__doc__#阅读源代码Print copy.__file__#标准库Sysosfileinput#集合, heap and double-ended queuesSet (range) Thecollection heap data structure is not independent of only one module containing some heap operations, called HEAPQ (6 functions) Double-ended queue#time#random#shelve#re# contains support for regular expressionsPython Basic Learning Note--python Basic Tutorial (2nd

#丰富的平台Tkinterwxpython .....#wxpythonImport Wxapp=wx. APP () win=wx/Frame (None) win. Show () app. Mainloop ()# Add button aapp=wx. APP () win=wx. Frame (None) btn=wx. Button (Win) win. Show () app. Mainloop () win=wx. Frame (none,title="simpleEditor") Loadbutton=wx. Button (win,label='Open') win. Show () app. Mainloop ()#事件# Button Events # Button # processing Functions def Load (Event) file=open (filename. GetValue ()) content. SetValue (Fiel.read ()) file.close ()ProcessingPytho

"Basic Python Tutorial 2nd edition Revision" study notes (i) Chapter I: Rapid transformation: Fundamentals 1.1 Installing Python (slightly) howtobecomea Hacker:http://www.catb.org/~esr/faqs/hacker-howto.html Chinese version: How to become a hacker http://blog.jobbole.com/64196/ (Bole online version, I

Presumably now everyone learning Python will use 3.0 and more versions, although the 2.X version is still a lot, but these two years with some open source projects no longer support 2.X version, 3.X has become a trend.It is in this background, I recently used this "basic Python tutorial" when the textbook, I found that although the author mentioned 2. X and 3.X version is different, but some places do not p

: Network Disk DownloadThis book presents a Python language teaching idea that aims to understand and apply computational ecology, not only the Python language syntax, but also the 14 Python libraries from data comprehension to image processing, and shows a new language learning path for the beginners of Python languag

Python 3 Program Development Guide (2nd edition revision)Directory 1 process-oriented programming Quick Start 2 Data Type 3 Combination Type 4 control structures and functions 5 Module 6 OOP 7 file Processing 8 Advanced Programming Techniques 8.1 FP 9 commissioning, testing and profiling Ten Processes and Threads One Net

, 7, 10]>>> x[3, 5, 2, 7, 1, 10, 6]10,CMP--Compare size, CMP (x, y), × greater than Y will return 1;x less than y return 0>>> CMP (42,32)1>>> CMP (99,100)-1>>> numbers = [5,2,9,7]>>> Numbers.sort (CMP)>>> numbers[2, 5, 7, 9]Three, meta-group1, the definition of the tuple:>>>(1, 2, 3)>>> 42,(42,)>>> ()()>>> (40+2)126>>> (40+2,)(42, 42, 42)2, the tuple () function--Similar to the list method for lists, you can convert a list or string into a tuple by using this function>>> tuple ([+])(1, 2, 3)>>>

', ' abalone ', ' aardvark ']Specify reverse Sort>>> x=[4,6,2,1,7,9]>>> X.sort (reverse=true)>>> x[9, 7, 6, 4, 2, 1]2.4: Tuples: Immutable sequences>>>(1, 2, 3)>>> (a)(1, 2, 3)>>> ()()How do you implement a tuple of values? You must add a reading number>>> (41)41>>> (41,)(41,)>>> 4141>>> 41,(41,)>>> (42)126>>> (40+2,)(42, 42, 42)2.4:tuple elementsConverting a sequence to a tuple>>> tuple ([+])(1, 2, 3)>>> tuple (' abc ')(' A ', ' B ', ' C ')>>> tuple ((+))(1, 2, 3)2.4.2 operation of Primitive t

DBecause if 2 different keys correspond to the same value, one of the 2 keys will definitely disappear for the 2 functions given by the solution.Thus the generated pseudo-inverse dictionary length will be shorter than the original dictionary length, in any case, only if the value in D is hashed, then the previous function will work properly, otherwise the function would give a TypeError exceptionThis function obtains the Iteritems method to generate a pair of keys and other corresponding values

2-5 Loops and Numbersa) i = 0While I Print Ii + = 1b) for I in Range (0,11):Print I2-6 conditionalsN =int (raw_input (' Enter a number: '))If n print ' negative 'Elif n > 0:print ' positive 'Elseprint ' zero '2-7 Loops and stringss = Raw_input (' Enter a string: ')For Each_char in S:Print Each_charOrFor I in range (len (s)):Print I,s[i]Ori = 0Slen = Len (s)While I Print I,s[i]I +=1OrFor I,x in enumerate (s):Print I,x2-8 Loops and operatorsSubtot = 0For I in range (5):Subtot + = Int (raw_input ('

　　　　　　　　　　　　　　 numeric operation built-in function functions nbsp; function ABS (num) Returns the absolute value of num Coerce (NUM1, num2) The Converts NUM1 and num2 to the same type and then returns as a tuple. Divmod (NUM1, num2) Division-the combination of the take redundancy operation. Returns a tuple (Num1/num2,num1%num2). The quotient of floating-point

3-2:Def do_twice (F, S1): F (S1) F (S1) def print_spam (S2):p rint (S2) def print_twice (S3):p rint (S3) Print (S3) def do_four (F1,f2, S4): F1 (F2,S4) F1 (F2,S4) do_twice (Print_twice, ' AAA ') do_four (Do_twice, print_spam, ' spam ')3-3.1:#!/usr/bin/env python3#-*-coding:utf-8-*-def push1 ():p rint (' +----', end = ') # Print is wrapped by default and can be printed at the end of a space change This behavior def push2 ():p rint (' | ', end = ') def do_twice (f): F () F () def do_four (

() in [+]: Print aa[1, 2, 34, 45, 332, 2342]Quick way to copy a list: The first method, is the slice assignment, the second through the sorted function;in []: x = [1,454,2,34,3]in]: y = x[:] or y = sorted (x) give Yin the value after x slice [max]: Y.sort () in [Max]: xout[73]: [1, 454, 2, 3]in, yout[74]: [1, 2, 3, 34, 454]///See, is so capricious;The function of the 9.tuple function is basically the same as the list function, which takes a sequence as an argument and converts it to a tuple;In

1 #coding:utf-8 # using Windows system, first line ' #!/usr/bin/env Pyton ' useless, all changed to ' # Coding:utf-8 '2 3 'readtextfile.py--Read and display text file'4 5 #get filename6fname = Raw_input ('Enter FileName:')7 Print8 9 #attempt to open file for readingTen Try: OneFobj = open (fname,'R') # Try to open fname A exceptIOError, E:#The detailed cause of the captured IOError error is placed in Object E, and then the except code block that runs the exception (can also be written

Zen of speech: the slide secret technology essential to the workplace (2nd edition) (full color) (international best-selling book, the first version of which has been on the top for four consecutive years) [Us] By Renard Translated by Wang You Wang Liang ISBN 978-7-121-19984-4 Published in April 2013 Pricing: 69.00 RMB Page 1 16 Edit recommendations Garr Renault published the "Zen of Speech" four years ag

Solutions 18210.2 Building a replication environment 18310.2.1 configuration of the primary server 18310.2.2 configuration of subordinate servers 18410.2.3 Starting the replication process 18510.3 External Data Wrapper 18610.3.1 Querying flat Files 18610.3.2 querying nonstandard flat files in the form of an irregular array 18710.3.3 querying data on other PostgreSQL service instances 18810.3.4 querying non-traditional data sources 190Appendix A, installation of PostgreSQL 192Appendix B PostgreS

very hard to see, but like learning to ride a bike, and then riding the time will always be, and the design and management of the book, the easiest thing is to look at the time quickly, read nothing left to practice.Therefore, we can not look at the speed of the novel design books, to find the opportunity to think, thinking is the best memory.Or, a large number of repetitive memories, repeated many times until the unconscious memory.4. Human engineer