A Smarter Way to Learn Python - Chapter 64 Exercises

Rewrite this line to read the file. (Don't use the shorthand that I told you about.)

with open("x.txt", "w") as f:

with open("x.txt", "r") as f:

^ *with open$•x\.txt•, •r•$ as f: *$

Rewrite this line to read, not write to the file. Do use the shorthand I told you about.)

with open("x.txt", "w") as f:

with open("x.txt") as f:

^ *with open$•x\.txt•$ as f: *$

Open the file "y.txt" to read. The file handle is file_to_read. Use the long form, not the shorthand.

with open("y.txt", "r") as file_to_read:

with `open`(`"`y.txt`"`, `"`r`"`) `as `file_to_read`:

Open the file "y.txt" to read. The file handle is f. Use the the shorthand.

with open("y.txt") as f:

Read the contents of the file whose handle is f into the variable contents. Start by indenting.

contents = f.read()

^ * contents = f\.read *$

Read the file. Make up the variable. Start by indenting.

with open("students.txt") as student_file:

info = student_file.read()

^ * [a-zA-Z_][a-zA-Z0-9_]* = student_file\.read *$

Open a file for reading using the long form. Then read it. Make everything up.

with open("students.txt", "r") as f:
student_list = f.read()

^ *with open$•.+\.txt•, •r•$ as ([a-zA-Z_][a-zA-Z0-9_]*):\n [a-zA-Z_][a-zA-Z0-9_]* = \1\.read *$

Open a file for reading using the shorthand form. Then read it. Make everything up.

with open("students.txt") as f:
student_list = f.read()

^ *with open$•[a-zA-Z_][a-zA-Z0-9_]*\.txt•$ as ([a-zA-Z_][a-zA-Z0-9_]*):\n [a-zA-Z_][a-zA-Z0-9_]* = \1\.read *$

Read this file. Use shorthand to open it. Make up the variable.

with open("students.txt", "w") as student_file
student_file.write("Smith", "Brown", "Alain")

with open("students.txt") as student_file:
student_info = student_file.read()

^ *with open$•students\.txt•$ as ([a-zA-Z_][a-zA-Z0-9_]*):\n [a-zA-Z_][a-zA-Z0-9_]* = \1\.read *$

Write to a file, then read it. Use the shorthand form. Make everything up.

with open("x.txt", "w") as f:
f.write("Hello, World!")
with open("x.txt") as my_file:
info_in_file = my_file.read()

^ *with open$•(.+)\.txt•, •w•$ as ([a-zA-Z_][a-zA-Z0-9_]*):\n \2\.write$•.+•$\nwith open$•\1\.txt•$ as ([a-zA-Z_][a-zA-Z0-9_]*):\n [a-zA-Z_][a-zA-Z0-9_]* = \3\.read *$

If you completed the exercises for the previous chapter, there's a text file on the Desktop that you created in IDLE. If you didn't create the file, do it now, following the directions in Exercises 11-12 for the previous chapter.
In IDLE (See Appendix D), create a Python program that reads your file and displays its contents.
Using any filename you like (that ends in .py), save the Python file to the Desktop.
Run the Python program.
If you've coded correctly the contents of the file will display in the IDLE shell.

A Smarter Way to Learn Python / Chapter 64 Exercises

Congratulations. You've aced all the exercises for this chapter.

All of my books include free interactive online exercises that make the knowledge stick.