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At the ‘predict’ & ‘run’ stages students work entirely with example code. They should inspect it carefully and write a prediction about what it will do.
They then run the code and compare the result to their prediction.
| Concept | Explanation | Code | Example |
|---|---|---|---|
| Read | Python can only read contents of the file. It cannot modify any information in the file. | r |
my_file = open("test.txt", "r") |
| Write | When python opens the file, it deletes everything inside. Then it can write new information to the file. All old information is lost. | w |
my_file = open("test.txt", "w") |
| Append | Python can add text to the end of the file. This keeps all old information while allowing new information to be added. | a |
my_file = open("test.txt", "a") |
| Close | When done working with a file, the file must be closed. | close() |
my_file.close() |
Files can be opened in either read, write, or append mode.
When working with files, the file is opened and stored in a variable.
my_file = open("test.txt", "r")Then, once done with the file, it must be closed.
my_file.close().txt)open and in the loop.my_file vs my_File)
