Which of the following is the best way of checking if a string could be represented as a number?

Which is the proper way to declare custom exceptions in modern Python?

To make numbers be of a specific length, zeroes are padded to the left. Which of the following is the best way to pad a string with zeroes to the left, to make its length 5? The string is: num = '123'

Which function prints all of the current properties and values of any kind of object?

What is the correct way to open the file 'test.txt' and append the text 'foo' to it?

What function is used to find the absolute path of a file?

Inheriting from a base class enables a custom class to use a few new capabilities, such as slots and properties. Which of the following is the base class of new-style datatypes?

What would the 'sorted_tel' be in the following code: tel = {'jack': 4098, 'sape': 5139, 'bill': 3678, 'mike': 2122} sorted_tel = sorted(tel.items(), key=lambda x: x[1])

Read the following statements: Statement 1: Many string module functions are now also available as string object methods. Statement 2: To use string object methods, there is no need to import the string module. Which of the following is correct?

Read the following statements: >>> import string >>> s = 'mary\011had a little lamb' >>> print s Which of the following will be the output of the above code snippet?

Read the following statements: >>> lst = ['spam','and','eggs'] >>> lst[2] = 'toast' >>> print ''.join(lst) >>> print ' '.join(lst) Which of the following is the output of the second print statement in the above code snippet?