Some additional attention has to be paid in this case:
Note: The way to assemble subsequent if-elif-else statements is sometimes called a cascade. A kind of shorter form of else if.Įlif is used to check more than just one condition, and to stop when the first statement which is true is found. Second special case: This introduces another new Python keyword: elif.
#Python not equal to operator code
consider how the indentation improves readability, and makes the code easier to understand and trace.this use of the if statement is known as nesting remember that every else refers to the if which lies at the same indentation level you need to know this to determine how the ifs and elses pair up.Here are two important points on above code: Consider carefully the code here: if the_weather_is_good: If there are no tickets, we’ll go shopping in the nearest mall. If the weather is poor, we’ll go to the theater. 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. The = (equal to) operator compares the values of two operands.
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