overs for tonight

Chapter 10 Files and Exceptions.py

@@ -177,3 +177,22 @@ def count_words_in_book(filename):
 for file in filename:
     count_words_in_book(file)
 
+#Addition: One common problem when prompting for numerical input occurs when
+#people provide text instead of numbers. When you try to convert the input to an int, you’ll get
+#a ValueError. Write a program that prompts for two numbers. Add them together and print
+#the result. Catch the ValueError if either input value is not a number, and print a friendly error
+#message. Test your program by entering two numbers and then by entering some text instead
+#of a number.
+while True:
+    number_one = input("What is the first number you would like to add? Enter to quit. ") #should really be testing for int here
+    if number_one == '':
+        break
+    number_two = input("What is the second number you would like to add? Enter to quit. ")
+    if number_two == '':
+        break
+    try:
+        value = int(number_one) + int(number_two)
+    except ValueError:
+        print("Please enter a number ")
+    else:    
+        print(value)

exercises.py

@@ -1,36 +1,18 @@
-#Addition: One common problem when prompting for numerical input occurs when
-#people provide text instead of numbers. When you try to convert the input to an int, you’ll get
-#a ValueError. Write a program that prompts for two numbers. Add them together and print
-#the result. Catch the ValueError if either input value is not a number, and print a friendly error
-#message. Test your program by entering two numbers and then by entering some text instead
-#of a number.
-while True:
-    number_one = input("What is the first number you would like to add? Enter to quit. ")
-    if number_one == '':
-        break
-    number_two = input("What is the second number you would like to add? Enter to quit. ")
-    if number_two == '':
-        break
-    try:
-        value = int(number_one) + int(number_two)
-    except ValueError:
-        print("Please enter a number ")
-    else:    
-        print(value)
-
-
-
-#Addition Calculator: Wrap your code from Exercise 10-6 in a while loop so the user
-#can continue entering numbers even if they make a mistake and enter text instead of a number.
-
-
-
 #Cats and Dogs: Make two files, cats.txt and dogs.txt. Store at least three names of cats in
 #the first file and three names of dogs in the second file. Write a program that tries to read these
 #files and print the contents of the file to the screen. Wrap your code in a try-except block to
 #catch the FileNotFound error, and print a friendly message if a file is missing. Move one of the
 #files to a different location on your system, and make sure the code in the except block
 #executes properly.
+catfile = "catfile.txt"
+dogfile = "dogfile.txt"
+
+while open(catfile, 'w') as file_object:
+    cat_content = file_object.write("Pork Chop\n Tiger\n La'FaShe")
+
+while open(dogfile, 'w') as f:
+    dog_content = f.write("Barney\nJack\nDuke")
+