A Smarter Way to Learn Python - Chapter 76 Exercises

Fill in the blank.

______
  filename = input("What text file to open? ")
  with open(filename) as f:
    print(f.read())
except FileNotFoundError:
  print("Sorry, " + filename + " not found.")

try:

^ *try: *$

Fill in the blank.

try:
  filename = input("What text file to open? ")
  with open(filename) as f:
    print(f.read())
_______ FileNotFoundError:
  print("Sorry, " + filename + " not found.")

except

^ *except *$

Fill in the blank

try:
  filename = input("What text file to open? ")
  with open(filename) as f:
    print(f.read())
except __________________
  print("Sorry, " + filename + " not found.")

FileNotFoundError:

File`Not`Found`Error`:

Fill in the blank.

try:
  filename = input("What text file to open? ")
  with open(filename) as f:
    print(f.read())
________________________
  print("Sorry, " + filename + " not found.")

except FileNotFoundError:

Code the first two lines of a block with exception handling. The second line opens a JSON file for writing. Assume the json module has already been imported. Make up what you need to.

try:
with open("xyz.json", "w") as j:

^ *try:\n with open$•.+\.json•, •w•$ as [a-zA-Z_][a-zA-Z0-9_]*: *$

Code the next line to deal with the file not being found.

try:
with open("xyz.json", "w") as j:

except FileNotFoundError:

^ *except FileNotFoundError: *$

Code the next line. It displays a message. Make up the message. Remember to indent.

try:
with open("xyz.json", "w") as j:
json.dump(some_list, j)
except FileNotFoundError:

print("Oh no!")

^ * print$•.+•$ *$

Code the first two lines of a block with exception handling. The second line opens a text file for reading. Use shorthand. Make up what you need to.

try:
with open("xyz.txt") as f:

^ *try:\n with open$•.+\.txt•$ as [a-zA-Z_][a-zA-Z0-9_]*: *$

Code the next line to display a message. The message is stored in a variable. Make up the variable name. Remember to indent.

except:

print(error_message)

^ * print$[a-zA-Z_][a-zA-Z0-9_]*$ *$

Code five lines that attempt to open a JSON file and read it. If the file doesn't open, display a message. Use shorthand. Make up what you need to. Assume that the json module has already been imported. The third line begins with a double indent.

try:
  with open("doctors.json") as j:
    j_content = json.load(j)
except FileNotFoundError:
  print("The file cannot be found.")

^ *try:\n with open$•.+\.json•$ as ([a-zA-Z_][a-zA-Z0-9_]*):\n [a-zA-Z_][a-zA-Z0-9_]* = json\.load$\1$\nexcept FileNotFoundError:\n print$•.+•$ *$

In IDLE code a Python program that tries to open a text file for reading. Ask it to open a file that doesn't exist.
If the file isn't found, display a message.
Save the Python program to the Desktop and run it.

A Smarter Way to Learn Python / Chapter 76 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.