Python functionality and evolution
Installing Python (windows and Ubuntu)
IDLE (Integrated Development and Learning Environment)
Write the first python program and execute it
Keywords in Python
Identifiers in Python
Indentation in Python
Comments in Python
Multi-line Comments in Python
Getting user input
Python Function
Calling a function
Arguments in Function
Scope of Variables
Modules in Python
The PYTHON PATH-Variable
Python File Open
Python File Opening Modes
The file-Object-Attributes
Python File Close() Method
Python File Read/Write
Python File Position
Renaming and Deleting Files in Python
Python Directory Methods
File/Directory Methods
Exceptions in Python
The try-finally Clause
The argument of Exception
Raising Exceptions
Python Built-in Exceptions
Python OOPs Concepts
Python Classes/Objects
Creating Instance Objects
Accessing Attributes
Built-In Class Attributes
Garbage Collection
Python Inheritance
Overriding Methods
Method overriding
Data Hiding
Regular Expression
The match function
The search function
Match Object Methods & Description
Matching or Searching
Search or Replace
Regular Expression Modifiers / Option Flags
Grouping with Parentheses
Python Socket Programming
Python Socket Server
Python Socket Client
Send Data Between Clients
Python Socket or Server
Python Socket Clients
Points to ponder
File object provides the set of access methods to make our lives happy. We would check how to use read() and write() methods to read / write files.
The write()-Method
The write()-method writes any string to an open file. It is important to note that Python-strings can binary data and not just text.
The write()-method does not add newline character ('\n') to the end of string.
Syntax >>>fileObject.write(string)
The passed parameter is the content to be written into opened file.
Example
The above method create foo.txt file / would write given content in that file and finally, it would close that file. If you open this file, it will have the following content.
Python is a good language.
Yeah its great!!
The read()-Method
The read()-method reads a string from an open file.
Syntax >>>>fileObject.read([count])
The passed parameter is number of bytes to be read from opened file. This method starts reading from beginning of file and if count is missing.
Example
Now take a file foo.txt, which we created above.
Output:
Read String is:python is
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Study Material