core python applications programming

I will share with you the answers to my core Python programming exercise.Because it is not from official resources, it is your own exercises. It may be wrong or not the best solution. [Recommendation] blog: Python module of niubHttp://www.cnblogs.com/chu888chu888/archive/2011/01/09/1931084.html [Recommendation] recomme

Here are some of the post-lesson exercises that you do when you're learning python core programming. Now paste them out to record your learning process. Brother is a mechanical background, a lot of practice topics written is very mechanical. Although the script can be written to meet the requirements of the topic, but the efficiency may not be the best, so, the y

The Python statement adds a newline character to each line by default, as long as you add a comma at the end to change the behavior Automatically returns the None object if no return is in the function PEP (Python Enhancement proposal abbreviated) Http://python.org/dev/peps Dir () Displays the object properties and, if there are no parameters, displays the names of the global variables Help

eval (), but is well suited for print statement outputThe repr () and ' operations are very similar in character and function, they return an "official" string representation of an object, and in most cases the object can be re-acquired by Eval ().In summary, the REPR () output is more friendly to Python, the STR () output is more user friendly, and in many cases the output of the three is exactly the same.(4) type () Isinstance ()Isinstance () is a

num1 * NUM2/GCD (NUM1, num2) print gcd (24 , 18 ) print LCM (24 , 18 ) 5-16 household finances. Given an initial amount and monthly cost, use the loop to determine the remaining amount and the current month's expenditure, including the last expenditure. The Payment () function uses the initial and monthly amounts, and the output should resemble the following format (the numbers in the example are for demonstration purposes only): def pay():Balance = Float (raw_input (' Enter Opening balance

The Spring Festival finally over, return to enrich the study of life. Open the long-lost CSDN blog, see the official push "blog markdown Editor Online", let me immediately have the desire to write, is really the welfare of programmers. Before reading a variety of article books, are made with markdownpad notes, like and accustomed to markdown concise grammar.All kinds of convenience. In order to try the results, the previous reading of "Python

2. Python Start 2.1 Print1 Print " Hello world! "2.2_: The value of the last expression>>: Output redirection%: Prints the formatted string and values for the style, and the value after% is a tuple object, with "()" containing thePrint "%s is a number%d."% ("Python", 6)ImportSYSPrint>> Sys.stderr,"msg"file= Open ("filename","a")Print>> file,"File MSG."file.close () Hello= Raw_input ("Hello:")Print "Num:%d.

Chapter III Python BasicsI. Statements and syntax\ n Standard Line delimiter\ Continue on line; Connect two statements to one line: Separate the head and body of the code blockCode blocks are represented as indented blocksPython files are organized in a modular formatIi. Assigning values to variablesNote: Objects in Python are passed by reference!Python does not

4-1python objectsAll Python objects has three Attributes:type,id,and value.All was readonly with a possible expection of the value (which can being changed only if the object is mutable).4-5str () and repr ()Repr () is a built-in function while STR () was a built-in function, changed to a factory function Inpython2.2.they would Both returns a string representation of an OBJECT;HOWEVER,STR () returns a printable string representation while repr () ret

Python core programming-exercises-Chapter 2, Chapter 2 PS: PDF online address: http://bcmi.sjtu.edu.cn /~ Zhaohai/ptm2012/data/Python-kernel.programming.v2.pdf 2-1 variables, print and string formatting operators. Start the interactive interpreter, assign values (strings, values, and so on) to some variables, and displ

The Create file (maketextfile.py) script reminds the user to enter a file name that does not yet exist, and then the user enters each line of the file, and then writes all the text to the text file1 #!/usr/bin/env python 2 3 ' maketextfile.py--creat text file ' 4 5 import os 6 ls = os.linesep 7 8 # get Fil E name 9 while true:10 if Os.path.exists (fname): #不存在返False, there is a return True11 print "ERROR: '%s ' already exists"% fname

1,false corresponding to integral type 0the Python object that ② has has a built- in true or False value. The Boolean value of the following object is false:None;False (Boolean type);All the values are zero numbers;0 (integral type);0.0 (floating point type);0L (Long integer type);0.0+0.0j (plural );"" (empty string);[] (empty list);() (empty tuple);{} (empty dictionary);The Boolean value of an object that is not a value other than the one listed abo

has been a programmer for many years, the first time to open a blog, welcome to fellow critics, comments.Recently obsessed with Python, after reading the Python Basics tutorial, and holding a "Python Core programming (third edition)" began to chew.After reading the first cha