Which list flattening method will have the shortest running time?

Which is the correct way to flush output of Python print?

Which is the best method to find the indices of all occurances of a word in a string? line = 'mary had a little lamb, little lamb, little lamb' word = 'lamb'

In Python 2.x, which is the way to check to make sure that the variable 'x' is not a string?

Which will throw an exception in Python?

Which function modifie the list in place to indicate which items are directories, and which are plain files?

Which statement is correct?

Which is the correct way to get the size of a list in Python?

Which code snippet would work as the best switch-case equivalent?

Read the following statements: Statement 1: The new-style class int already supports Bitwise, so there is no need to implement it again in derived classes. Statement 2: With new-style classes, data values can be referred to directly with ‘myself’. Which of the following is correct?

Which type is correct for instances of user-defined classes?