Reading and Writing files in python
<file pointer>.write(string) writes the contents of string to the file, returning none.
Category: Files and Input Output
Files and Input Output
Absolute path python
os.path.abspath makes sure a path is absolute. In the following example we are iterating through a directory and printing absolute path of each file in that directory. Example Output
Iterating directories in python with os.walk
os.walk takes care of the details, and on every pass of the loop, it gives us three things: dirName: The next directory it found. subdirList: A list of sub-directories in the current directory. fileList:...
Command-line Arguments
The sys module also provides access to any command-line arguments via the sys.argv. Command-line arguments are those arguments given to the program in addition to the script name on invocation. Historically, of course, these...
Standard Files
There are generally three standard files which are made available to you when your program starts. These are standard input (usually the keyboard), standard output (buffered output to the monitor or display), and standard...
opening and reading a file
Consider the following example to open and read file contents Example We originally described how this program differs from most standard file access in that all the lines are read ahead of time before...
File Built-in Methods
Once open() has completed successfully and returned a file object, all subsequent access to the file transpires with that “handle.” File methods come in four different categories: input, output, movement within a file, which...
File Built-in Function fopen()
As the key to opening file doors, the open() built-in function provides a general interface to initiate the file input/output (I/O) process. open() returns a file object on a successful opening of the file...
File Objects
File objects can be used not only to access normal disk files, but also any other type of “file” that uses that abstraction. Once the proper “hooks” are installed, you can access other objects...