## How to use all() and any() built-ins in python

This is the first part of the series on python built-in functions. In this tutorial we will present any() and all() built-ins. Both these functions serve to analyze the content of a sequence when applying a specific condition/requirement. 1. any(sequence) any() function is used to check if at least one element of a sequence fulfills a given condition, i.e. returns “True”. Eg.: >>> any ( [ True ] ) True >>> any ( [ True, True, True ] ) True >>> any ( [ True, True, False ] ) True >>> z = [ 10, 20, 30 ] >>> any ( [ x > 10 for x in z ] ) True >>> any ( [ x > 50 for x in z ] ) False >>> In order to make a good use of this function you need to know the return value of different types in python. For example, all numbers except 0 return True: >>> z = [ 0, 0, 0.01, 0 ] >>> any ( z ) True >>> z = [ 0, 0, 0, 0 ] >>> any ( z ) False Strings, apart the empty string, return True: >>> any( [ 0, 0, "0", 0 ] ) True >>> any ( [ 0, 0, "", 0 ] ) False Empty sequences and None type are always False. Be careful! A sequence containing...

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