18 os -- predefined module

 '''

1. The OS module in python provides functions for 

interacting with the operating system. 

'''

import os


print(dir(os))


# To create a directory

#os.mkdir('TODAY')


# To remove directory

#os.rmdir("TODAY")


# To create a file

#open("my_file.py", 'w')

 

# To rename a file use os module

#os.rename('my_file.py', 'RRR.py')


# To check file is exist or not return True is exist or False

#status = os.path.isfile('RRR.py')

#print(' Status :', status)


# To run system commands

#print(os.system('dir'))

#os.system('python today.py')


Comments

Post a Comment

Popular posts from this blog

1 PYTHON PROGRAMMING

Image
  Python Programming tutorial provides basic and advanced concepts of Python programming. This Python programming  tutorial is designed for beginners and professionals.  Python is a simple, general purpose, high level, and object-oriented programming language. In this we have different chapter and their concepts Python Programming : tokens, literals, identifiers, keywords, special symbols and operators; fundamental data types, expressions, type conversions, handling Input and output in Python. Selection Statements : if statement, if-else statement, if-elif-else statement, nested-if statement.  Iterative Statements : while loop, for loop, break statement, continue statement, pass and else statements used with loops. Sequences : Lists and operations - creating, inserting elements, updating elements, deleting elements, searching and sorting, list comprehensions, nested lists; tuples - creating, searching and sorting, nested tuples;  strings - Initializing a...
Read more

4 Tuple data types

 ''' 1. Tuple is used to store multiple values and  we can do operation on each value based on index. 2. Tuple is a read only object,  we can't do update,insert and delete operations. 3. Using parentheses "()" we can create a tuple 4. tuple is a immutable object 5. To store sensitive data we use tuple. ''' # To create a tuple names = ('umamahesh','kumar','balu','ram', 567, 99.9) # Tuple doesn't support for item deltion and update names[3] = 'ok' del names[3] # To print particular value based on index print(names[4]) print(names[-1]) # To delete a total tuple del names
Read more

2 String data types

Image
 ''' 1. Using string we can store any value but  it should be in single quotes or double quotes. 2. String is a immutable object ''' # To define a string variable # name = 'sri123$#%   &' # print('name is:', name) # print('\n memory location for name is :', id(name)) # If string contains double quote  name1 = " I don't 'know' umamahesh" print('name is:', name1) print('\n memory location for name is :', id(name1)) # If string contains double quote  # name2 = ' I know "sriram"' # If string contains single quote and double quote  #name3 = ''' I don't know "sriram"''' # To update #name = 'kumar' #print(name) # To Delete  #del name  # To Print on console #print(' Name is : ', name)
Read more