What does a method name that starts with two underscores but does not end with two underscores signify?

What will be the output: a = [1, 2, 3, 4] for (i, x) in enumerate(a): for (j, y) in enumerate(a[i:]): print j, print

Which if statement will result in an error?

A function can be declared using 'def double(x): return x+x' or using 'double = lambda x: x+x'. What is the difference between these declarations?

Given mydict = {'foo': 'hello', 'bar': 'world'} Which of the below would evaluate to True ?

print max([3,4,-5,0],key=abs) returns?

How can a list of dictionaries be sorted by the values of the dictionaries?

Output of the following? t=(1,2,4,3,5) print(t[1:3])

Output of following code? def val1(param): return param def val2(param): return param * 2 def val3(param): return param + 5 result = val1(val2(val3(1))) print(result)

Output of the below code snippet? x = [] y = x y.append(10) z = 5 w = z z = z - 1 print(y) print(x) print(z) print(w)