Server Side Programming Articles - Page 1925 of 2646

Python provides no braces to indicate blocks of code for class and function definitions or flow control. Blocks of code are denoted by line indentation, which is rigidly enforced.The number of spaces in the indentation is variable, but all statements within the block must be indented the same amount. For example −if True: print "True" else: print "False"However, the following block generates an error −if True: print "Answer" print "True" else: print "Answer" print "False"Thus, in Python all the continuous lines indented with same number of spaces would form a block. The following example has various statement blocks −Note − ... Read More

A Python identifier is a name used to identify a variable, function, class, module or other object. An identifier starts with a letter A to Z or a to z or an underscore (_) followed by zero or more letters, underscores and digits (0 to 9).Python does not allow punctuation characters such as @, $, and % within identifiers. Python is a case sensitive programming language. Thus, Manpower and manpower are two different identifiers in Python.Here are naming conventions for Python identifiers −Class names start with an uppercase letter. All other identifiers start with a lowercase letter.Starting an identifier with ... Read More

Here are important environment variables, which can be recognized by Python −Sr.No.Variable & Description1PYTHONPATHIt has a role similar to PATH. This variable tells the Python interpreter where to locate the module files imported into a program. It should include the Python source library directory and the directories containing Python source code. PYTHONPATH is sometimes preset by the Python installer.2PYTHONSTARTUPIt contains the path of an initialization file containing Python source code. It is executed every time you start the interpreter. It is named as .pythonrc.py in Unix and it contains commands that load utilities or modify PYTHONPATH.3PYTHONCASEOKIt is used in Windows ... Read More

Python distribution is available for a wide variety of platforms. You need to download only the binary code applicable for your platform and install Python.If the binary code for your platform is not available, you need a C compiler to compile the source code manually. Compiling the source code offers more flexibility in terms of choice of features that you require in your installation.Recent Macs come with Python installed, but it may be several years out of date. Seehttp://www.python.org/download/mac/ for instructions on getting the current version along with extra tools to support development on the Mac. For older Mac OS's ... Read More

Python distribution is available for a wide variety of platforms. You need to download only the binary code applicable for your platform and install Python.If the binary code for your platform is not available, you need a C compiler to compile the source code manually. Compiling the source code offers more flexibility in terms of choice of features that you require in your installation.Here are the simple steps to install Python on Unix/Linux machine.Open a Web browser and go to https://www.python.org/downloads/Follow the link to download zipped source code available for Unix/Linux.Download and extract files.Editing the Modules/Setup file if you want to customize ... Read More

Python is a high-level, interpreted, interactive and object-oriented scripting language. Python is designed to be highly readable. It uses English keywords frequently where as other languages use punctuation, and it has fewer syntactical constructions than other languages.Python is a MUST for students and working professionals to become a great Software Engineer specially when they are working in Web Development Domain. I will list down some of the key advantages of learning Python −Python is Interpreted − Python is processed at runtime by the interpreter. You do not need to compile your program before executing it. This is similar to PERL ... Read More

Python is a totally free language to download, use, and code. Its commands are mostly in simple English. This makes it easy to remember and write commands. The code is readable and with a little knowledge, a developer can learn many things just by looking at the code.It has standard libraries that offer a lot of functionalities which lets you implement complex applications with ease. Python was designed with the newbies in mind. The use of white space and common expressions has eliminated the need for tedious variable declarations and ugly braces.Your First Steps in ProgrammingPython can be your starting ... Read More

In this problem, we are given a number n. Our task is to print patterns with decreasing to 0 or negative then increasing back to the number.Let’s take an example to understand the problem,Input: n = 12 Output: 12 7 2 -3 2 7 12To solve this problem, we will use recursion and call the function after each update. The track of update is kept using the flag variable which tells the function to increase or decrease the number by 5.ExampleThe below code gives the implementation of our solution, Live Demo#include using namespace std; void printNextValue(int m){    if (m > 0){       cout

In this problem, we are given a string and an integer n. Our task is to print the given string in a wave pattern of n lines.Let’s take an example to understand the problem, Input: Tutorial n = 3 Output: T             r    U       o       i       s       t                lWave patterns are printed by printing each character of the string one by one in the next line and tab space away from the next element till ... Read More

In this problem, we are given a number. And we have to print all 3 digit repeating numbers.Let’s take an example to understand the problem, Input: 98769876598765 Output:    987: 3 times    876: 3 times    765: 2 timesTo solve this problem, we will use the large number which is stored string. The digits of the numbers are counted as characters. Now, we will check the first three numbers and then start from the 3rd index to the end and get a new number. After this, we will check for the next 3 digit numbers are count its frequency. ... Read More