list.remove(obj) − Removes object obj from list.
How will you reverse a list?
list.reverse() − Reverses objects of list in place.
How will you sort a list?
list.sort([func]) − Sorts objects of list, use compare func if given.
Q97).Name five modules that are included in python by default (many people come searching for this, so I included some more examples of modules which are often used)
datetime (used to manipulate date and time)
re (regular expressions)
urllib, urllib2 (handles many HTTP things)
string (a collection of different groups of strings for example all lower_case letters etc)
itertools (permutations, combinations and other useful iterables)
ctypes (from python docs: create and manipulate C data types in Python)
email (from python docs: A package for parsing, handling, and generating email messages)
__future__ (Record of incompatible language changes. like division operator is different and much better when imported from __future__)
sqlite3 (handles database of SQLite type)
unittest (from python docs: Python unit testing framework, based on Erich Gamma’s JUnit and Kent Beck’s Smalltalk testing framework)
xml (xml support)
logging (defines logger classes. enables python to log details on severity level basis)
os (operating system support)
pickle (similar to json. can put any data structure to external files)
subprocess (from docs: This module allows you to spawn processes, connect to their input/output/error pipes, and obtain their return codes)
webbrowser (from docs: Interfaces for launching and remotely controlling Web browsers.)
traceback (Extract, format and print Python stack traces)
Name a module that is not included in python by default
mechanize
django
gtk
A lot of other can be found at pypi.
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| Baidu Python Recent Asked Interview Questions Answers |
What is Django Framework in Python?
Django is a high-level Python framework which is used primarily for Web Development. This framework encourages fast and efficient development with pragmatic and clean design. Built by experienced developers, it takes care of much of the hassle of Web development, so you can focus on writing your app without needing to reinvent the wheel. It’s free and open source.
Is Python a Compiled or an Interpreted Programming Language?
Python programs have the extension .py. These source files are first compiled to Byte Codes (which does not contain the binary codes). These Byte Code files helps in startup speed optimization. These byte-codes are then sent to the Python Virtual Machine where lines of codes are read one after another which means that it is interpreted.
Enlist the Non-Mutable Built-in types in Python programming environment?
The Non-Mutable Built-in types in Python Programming Environment are as follows:
1. Tuples
2. Numbers
3. Strings
How can we define Scope in a Python program?
Python programming environment does not support the use of Braces for Defining Scope for a variable or a method. However, it uses Indentations to let the Python interpreter decide the scope itself. Proper indentations, if not used will normally generate an error.
Enlist various Exceptions identified by Python?
The various exceptions identified by Python Environment are as follows:
1. IOError
2. IndexError
3. KeyError
4. NameError
5. SyntaxError
6. ValueError
7. TypeError.
How will you convert a string to a list in python?
list(s) − Converts s to a list.
How will you convert a string to a set in python?
set(s) − Converts s to a set.
How will you create a dictionary using tuples in python?
dict(d) − Creates a dictionary. d must be a sequence of (key,value) tuples.
How will you convert a string to a frozen set in python?
frozenset(s) − Converts s to a frozen set.
How will you capitalizes first letter of string?
capitalize() − Capitalizes first letter of string.
How will you check in a string that all characters are alphanumeric?
isalnum() − Returns true if string has at least 1 character and all characters are alphanumeric and false otherwise.
How will you check in a string that all characters are digits?
isdigit() − Returns true if string contains only digits and false otherwise.
How will you check in a string that all characters are in lowercase?
islower() − Returns true if string has at least 1 cased character and all cased characters are in lowercase and false otherwise.