Situatie
The key function for working with files in Python is the open()
function.
The open()
function takes two parameters; filename, and mode.
There are four different methods (modes) for opening a file:
"r"
– Read – Default value. Opens a file for reading, error if the file does not exist
"a"
– Append – Opens a file for appending, creates the file if it does not exist
"w"
– Write – Opens a file for writing, creates the file if it does not exist
"x"
– Create – Creates the specified file, returns an error if the file exists
In addition you can specify if the file should be handled as binary or text mode
"t"
– Text – Default value. Text mode
"b"
– Binary – Binary mode (e.g. images)
Solutie
To open a file for reading it is enough to specify the name of the file:
f = open(“demofile.txt”)
The code above is the same as:
f = open(“demofile.txt”, “rt”)
Because "r"
for read, and "t"
for text are the default values, you do not need to specify them.
Leave A Comment?