Aproblem with the short-circuit evaluation of logical operators is that they are not commutative, because they might raise exceptions: e. g., if x is 0, Python evaluates x!=0 and 1/x<2 to False, but evaluates 1/x<2 and x!=0 by raising an exception: it attempts to divide by 0 in the left conjunct. Define the XBool class so that each XBool object is a special representation of either the bool True, the bool False, or an exception being raised when trying to compute its bool value. Write a commutative and operator for XBools: writing XBool('x!=0') and XBool('1/x<2') evaluates to the XBool representing False; so does writing XBool('1/x<2') and XBool('x!=0').

So im doing this school challenge and the teachers said whats the average text a student gets a day so i need to get about 20 in a day but dont know how can you guys 2163371293

What is the biggest difference between section breaks and regular page breaks? section breaks are more difficult to add than page breaks. section breaks make it easier for you to view the document as an outline. section breaks allow you to have areas of the document with different formatting. section breaks are smaller than regular page breaks.

File account.java (see previous exercise) contains a definition for a simple bank account class with methods to withdraw, deposit, get the balance and account number, and return a string representation. note that the constructor for this class creates a random account number. save this class to your directory and study it to see how it works. then write the following additional code: 1. suppose the bank wants to keep track of how many accounts exist. a. declare a private static integer variable numaccounts to hold this value. like all instance and static variables, it will be initialized (to 0, since it’s an int) automatically. b. add code to the constructor to increment this variable every time an account is created. c. add a static method getnumaccounts that returns the total number of accounts. think about why this method should be static - its information is not related to any particular account. d. file testaccounts1.java contains a simple program that creates the specified number of bank accounts then uses the getnumaccounts method to find how many accounts were created. save it to your directory, then use it to test your modified account class.