![]() If we find a nice restaurant, we’ll have lunch there. If the weather is fine, we’ll go for a walk. Read what we have planned for this Sunday. Now let’s discuss two special cases of the conditional statement.įirst special case: Consider the case where the instruction placed after the if is another if. ![]() if the condition evaluates to False (it is equal to zero), the perform_if_condition_false statement is executed, and the conditional statement comes to an end.if the condition evaluates to True (its value is not equal to zero), the perform_if_condition_true statement is executed, and the conditional statement comes to an end.The part of the code which begins with else says what to do if the condition specified for the if is not met (note the colon after the word). This is done with a second, slightly more complex form of the conditional statement, the if-else statement. Python allows us to express such alternative plans. Now we know what we’ll do if the conditions are met, and we know what we’ll do if not everything goes our way. Feeding the sheepdogs, however, is always done (i.e., the feed_the_sheepdogs() function is not indented and does not belong to the if block, which means it is always executed.)Ĭonditional execution: the if-else statement The greater than operator has another special, non-strict variant, but it’s denoted differently than in classical arithmetic notation: >= (greater than or equal to).Ĭomparison operators: less than or equal toĪs you’ve probably already guessed, the operators used in this case are: the = 120:Īs you can see, making a bed, taking a shower and falling asleep and dreaming are all executed conditionally – when sheep_counter reaches the desired limit. You can also ask a comparison question using the > (greater than) operator.Ĭomparison operators: greater than or equal to Print(var != 0) Comparison operators: greater than If they are not equal, the result of the comparison is True. ![]() Here is the difference: if they are equal, the result of the comparison is False. The != (not equal to) operator compares the values of two operands, too. Inequality: the not equal to operator (!=) If they are not equal, the result of the comparison is False. If they are equal, the result of the comparison is True. You can use the equal operator to compare dictionaries: > Īs you can see the order doesn’t make a difference in the comparison, because the Dictionary’s order doesn’t matter.The = (equal to) operator compares the values of two operands. You can use the not equal operator to compare sets: > set() != set()Īs you can see the order of the initial list doesn’t make a difference in the comparison, because the Set’s order doesn’t matter. You can use the not equal operator to compare tuples: > (2, 3) != (2, 3) You can use the not equal operator to compare lists: > != Python not equal operator compares the value of objects, that’s in contrast to the Python is not operator that compares if they are actually different objects. ![]() Print('a and b are equal') Comparing Objects with != The most common use of the not equal operator is to decide the flow of the application: a, b = 3, 5 The result of the operation is a Boolean. ![]() Python not equal comparison is done with !=, the not equal operator. ![]()
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