Exception Handling Program Plan: • Declare a function named “main()”. ○ Declare the variable “amount” and assign “0.0” for this variable. ○ Declare the variable “value” and assign “0.0” for this variable. ○ Declare the variable “count” and assign “0”for this variable. ○ Declare a “try” suite. ○ Open the file named “numbers.txt” that is available in disk to read the numbers in the file and store the numbers in the variable “inputfile”. ○ Use the “for” loop to perform the iteration. ■ Increment “count” variable to count the iteration of the loop. ■ Convert the “integer” number stored in the variable “number” to “float” number and assign it to the variable “value”. ■ Add all the values and assign the total to the variable “amount”. ○ Close the file “numbers.txt”. ○ Calculate the average. ○ Display the average of the numbers stored in the variable “average”. ○ If the file named “numbers.txt” is not available in the disk, then it branches to the “IOError” except clause and print the exception handling statement. ○ If the file “numbers.txt” holds the “string” value, then it branches to the “ValueError” except clause and print the exception handling statement. ○ Rather than the above two exceptions, any other exception occurs in the “try” suite; then, it branches to the last “except” clause. ○ Call the function “ main()”.

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Answer 1

Question

Chapter 6, Problem 9PE

Program Plan Intro

Exception Handling

Program Plan:

• Declare a function named “main()”.

○ Declare the variable “amount” and assign “0.0” for this variable.

○ Declare the variable “value” and assign “0.0” for this variable.

○ Declare the variable “count” and assign “0”for this variable.

○ Declare a “try” suite.

○ Open the file named “numbers.txt” that is available in disk to read the numbers in the file and store the numbers in the variable “inputfile”.

○ Use the “for” loop to perform the iteration.

■ Increment “count” variable to count the iteration of the loop.

■ Convert the “integer” number stored in the variable “number” to “float” number and assign it to the variable “value”.

■ Add all the values and assign the total to the variable “amount”.

○ Close the file “numbers.txt”.

○ Calculate the average.

○ Display the average of the numbers stored in the variable “average”.

○ If the file named “numbers.txt” is not available in the disk, then it branches to the “IOError” except clause and print the exception handling statement.

○ If the file “numbers.txt” holds the “string” value, then it branches to the “ValueError” except clause and print the exception handling statement.

○ Rather than the above two exceptions, any other exception occurs in the “try” suite; then, it branches to the last “except” clause.

○ Call the function “ main()”.

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Answer 2

Question

Chapter 6, Problem 9PE

Program Plan Intro

Exception Handling

Program Plan:

• Declare a function named “main()”.

○ Declare the variable “amount” and assign “0.0” for this variable.

○ Declare the variable “value” and assign “0.0” for this variable.

○ Declare the variable “count” and assign “0”for this variable.

○ Declare a “try” suite.

○ Open the file named “numbers.txt” that is available in disk to read the numbers in the file and store the numbers in the variable “inputfile”.

○ Use the “for” loop to perform the iteration.

■ Increment “count” variable to count the iteration of the loop.

■ Convert the “integer” number stored in the variable “number” to “float” number and assign it to the variable “value”.

■ Add all the values and assign the total to the variable “amount”.

○ Close the file “numbers.txt”.

○ Calculate the average.

○ Display the average of the numbers stored in the variable “average”.

○ If the file named “numbers.txt” is not available in the disk, then it branches to the “IOError” except clause and print the exception handling statement.

○ If the file “numbers.txt” holds the “string” value, then it branches to the “ValueError” except clause and print the exception handling statement.

○ Rather than the above two exceptions, any other exception occurs in the “try” suite; then, it branches to the last “except” clause.

○ Call the function “ main()”.

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Answer 3

Question

Chapter 6, Problem 9PE

Program Plan Intro

Exception Handling

Program Plan:

• Declare a function named “main()”.

○ Declare the variable “amount” and assign “0.0” for this variable.

○ Declare the variable “value” and assign “0.0” for this variable.

○ Declare the variable “count” and assign “0”for this variable.

○ Declare a “try” suite.

○ Open the file named “numbers.txt” that is available in disk to read the numbers in the file and store the numbers in the variable “inputfile”.

○ Use the “for” loop to perform the iteration.

■ Increment “count” variable to count the iteration of the loop.

■ Convert the “integer” number stored in the variable “number” to “float” number and assign it to the variable “value”.

■ Add all the values and assign the total to the variable “amount”.

○ Close the file “numbers.txt”.

○ Calculate the average.

○ Display the average of the numbers stored in the variable “average”.

○ If the file named “numbers.txt” is not available in the disk, then it branches to the “IOError” except clause and print the exception handling statement.

○ If the file “numbers.txt” holds the “string” value, then it branches to the “ValueError” except clause and print the exception handling statement.

○ Rather than the above two exceptions, any other exception occurs in the “try” suite; then, it branches to the last “except” clause.

○ Call the function “ main()”.

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Answer 4

Question

Chapter 6, Problem 9PE

Program Plan Intro

Exception Handling

Program Plan:

• Declare a function named “main()”.

○ Declare the variable “amount” and assign “0.0” for this variable.

○ Declare the variable “value” and assign “0.0” for this variable.

○ Declare the variable “count” and assign “0”for this variable.

○ Declare a “try” suite.

○ Open the file named “numbers.txt” that is available in disk to read the numbers in the file and store the numbers in the variable “inputfile”.

○ Use the “for” loop to perform the iteration.

■ Increment “count” variable to count the iteration of the loop.

■ Convert the “integer” number stored in the variable “number” to “float” number and assign it to the variable “value”.

■ Add all the values and assign the total to the variable “amount”.

○ Close the file “numbers.txt”.

○ Calculate the average.

○ Display the average of the numbers stored in the variable “average”.

○ If the file named “numbers.txt” is not available in the disk, then it branches to the “IOError” except clause and print the exception handling statement.

○ If the file “numbers.txt” holds the “string” value, then it branches to the “ValueError” except clause and print the exception handling statement.

○ Rather than the above two exceptions, any other exception occurs in the “try” suite; then, it branches to the last “except” clause.

○ Call the function “ main()”.

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Answer 5

Chapter 6, Problem 9PE

Program Plan Intro

Exception Handling

Program Plan:

• Declare a function named “main()”.

○ Declare the variable “amount” and assign “0.0” for this variable.

○ Declare the variable “value” and assign “0.0” for this variable.

○ Declare the variable “count” and assign “0”for this variable.

○ Declare a “try” suite.

○ Open the file named “numbers.txt” that is available in disk to read the numbers in the file and store the numbers in the variable “inputfile”.

○ Use the “for” loop to perform the iteration.

■ Increment “count” variable to count the iteration of the loop.

■ Convert the “integer” number stored in the variable “number” to “float” number and assign it to the variable “value”.

■ Add all the values and assign the total to the variable “amount”.

○ Close the file “numbers.txt”.

○ Calculate the average.

○ Display the average of the numbers stored in the variable “average”.

○ If the file named “numbers.txt” is not available in the disk, then it branches to the “IOError” except clause and print the exception handling statement.

○ If the file “numbers.txt” holds the “string” value, then it branches to the “ValueError” except clause and print the exception handling statement.

○ Rather than the above two exceptions, any other exception occurs in the “try” suite; then, it branches to the last “except” clause.

○ Call the function “ main()”.

Answer 6

Chapter 6, Problem 9PE

Program Plan Intro

Exception Handling

Program Plan:

• Declare a function named “main()”.

○ Declare the variable “amount” and assign “0.0” for this variable.

○ Declare the variable “value” and assign “0.0” for this variable.

○ Declare the variable “count” and assign “0”for this variable.

○ Declare a “try” suite.

○ Open the file named “numbers.txt” that is available in disk to read the numbers in the file and store the numbers in the variable “inputfile”.

○ Use the “for” loop to perform the iteration.

■ Increment “count” variable to count the iteration of the loop.

■ Convert the “integer” number stored in the variable “number” to “float” number and assign it to the variable “value”.

■ Add all the values and assign the total to the variable “amount”.

○ Close the file “numbers.txt”.

○ Calculate the average.

○ Display the average of the numbers stored in the variable “average”.

○ If the file named “numbers.txt” is not available in the disk, then it branches to the “IOError” except clause and print the exception handling statement.

○ If the file “numbers.txt” holds the “string” value, then it branches to the “ValueError” except clause and print the exception handling statement.

○ Rather than the above two exceptions, any other exception occurs in the “try” suite; then, it branches to the last “except” clause.

○ Call the function “ main()”.

Answer 7

Chapter 6, Problem 9PE

Program Plan Intro

Exception Handling

Program Plan:

• Declare a function named “main()”.

○ Declare the variable “amount” and assign “0.0” for this variable.

○ Declare the variable “value” and assign “0.0” for this variable.

○ Declare the variable “count” and assign “0”for this variable.

○ Declare a “try” suite.

○ Open the file named “numbers.txt” that is available in disk to read the numbers in the file and store the numbers in the variable “inputfile”.

○ Use the “for” loop to perform the iteration.

■ Increment “count” variable to count the iteration of the loop.

■ Convert the “integer” number stored in the variable “number” to “float” number and assign it to the variable “value”.

■ Add all the values and assign the total to the variable “amount”.

○ Close the file “numbers.txt”.

○ Calculate the average.

○ Display the average of the numbers stored in the variable “average”.

○ If the file named “numbers.txt” is not available in the disk, then it branches to the “IOError” except clause and print the exception handling statement.

○ If the file “numbers.txt” holds the “string” value, then it branches to the “ValueError” except clause and print the exception handling statement.

○ Rather than the above two exceptions, any other exception occurs in the “try” suite; then, it branches to the last “except” clause.

○ Call the function “ main()”.

Answer 8

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Answer 9

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Answer 10

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Answer 11

Ch. 6.1 - What is an output file?Ch. 6.1 - What is an input file?Ch. 6.1 - What three steps must be taken by a program when...Ch. 6.1 - Prob. 4CP Ch. 6.1 - Prob. 5CP Ch. 6.1 - When writing a program that performs an operation...Ch. 6.1 - If a file already exists, what happens to it if...Ch. 6.1 - What is the purpose of opening a file?Ch. 6.1 - What is the purpose of closing a file?Ch. 6.1 - Prob. 10CP

Solution Summary: The author explains how to handle Exception Handling in a "try" suite.

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