Python Short Questions
How you can execute python program on command prompt?
Change your working directory at c:/python and then
type python
program –name .py
Define List.
List is a mutable data structure that
can have elements that belong to the different data structure.
Define Tuple.
It is a sequence of immutable objects
i.e , values of data items can’t be changed.
Give the syntax for a function definition.
def function_name (variable1 ,
variable2, …..)
statement1…….statement
n
return
(expression)
Name different types of arguments while defining a function.
a. Required arguments
b. Keyword arguments
c. Default arguments
d. Variable length arguments
What are global variables?
Variables defined in the main body of
a program are called global variables and are visible throughout the program
file.
What are global
variables?What are local variables?
A variable which is defined within a
function is called local variable. A local variable can be accessed from the
point of its definition until the end of function in which it is defined.
What
is an exception?
An exception occurs because of some
mistake in program that system cannot detect before executing the code as there
is nothing wrong in terms of syntax, but leads to a situation during the program
execution that system cannot handle. These errors disrupt the flow of program at
run-time by terminating the execution at the point of occurrence of error.
What is regular expression?
It is a special sequence of
characters that helps to match or find strings in another string.
What is data encapsulation?
Organizing the data and methods into
a structure that data access by a function or method that is not specified in
the class.
Syntax of if statement.
if(condition):
set
of statements….
Explain try except clause.
It is used for exception handling.
Try block consists of statements that have potential to raise exceptions and
the except block describes the action to be taken when an exception is raised.
Describe break and continue statement.
Break: - it is used to terminate the
execution of the nearest enclosing loop in which it appears.
Continue:- like the break statement ,
the continue statement can only appear in the body of a loop. When the compiler
encounters a continue statement then the rest of the body of the statements in
the loop are skipped and the control is transferred to the loop-continuation
portion of the nearest loop enclosing.
What is open() method?
It is used to create a file object
that will be used to invoke methods associated with it.
What is close() method?
It is used to close the file object.
Define class
It is a user defined prototype for an
object that defines a set of attributes and methods that are accessed via
dot(.) notation.
Give syntax for defining a class in python.
Class class_name:
St-1
St-2
---
----
St-n
Define polymorphism.
It is the property that provides
ability to process data in more than one form
Define inheritance.
Technique of creating a new class
from existing class is called inheritance.
Define sets.
.A set is a mutable and unordered
collection of data items.
How a set is created?
It is created by placing all elements
inside curly brackets{} , separated by comma(,) or using a built in function
set().
Give few applications of python.
a. Web development
b. 3 d software
c. Gui based desktop applications
d. Image processing
What is Unicode?
It is a standard way of writing international
text. Python allows to specify Unicode text by prefixing the string with letter
u or U.
Syntax of format() function
Format(value, format-specifier)
Define variables
These are reserved memory locations
that store values. Each value is given an appropriate name.
Define identifiers.
These are the names given to the
something that can be a variable, function, class module or other object.
What is function.
A function is a block of organized
and reusable program code that performs a single and well defined task.
What is recursive function.
The function that call itself to
solve similar version of task is called recursive function.
What is module?
It is a pre-written piece of code
that are used to perform common task .
What is multiple inheritance?
When a derived class inherits
features from more than one base classes, it is called multiple inheritance.
Define multilevel inheritance.
The technique of deriving a class
from an already derived class is called multi-level inheritance.
Define multipath inheritance.
Deriving a class from other derived
classes that are in turn derived from the same base class is called multi-path
inheritance.
