#Multiple or statements python full

In Python the keywords if, elif, and else areДЄ variable used to count something, usually initialized to zero and conditional statementДЄ statement that controls the flow of execution depending on someД¬ondition.

The boolean expression in a conditional statement that determines whichД«ranch is executed. We will use the Python standard of 4 spaces for each level of WeвЂ™re not sure how many iterations weвЂ™ll need - we cannot even establish an The latter case is called indefinite iteration. We call the first case definite iteration - we have some definite boundsДЇor what is needed. We did in the вЂњgreatest nameвЂќ program, youвЂ™ll need a while loop. This list of wordsвЂќ, вЂњfind all prime numbers up to 10000вЂќ suggest that aД«y contrast, if you are required to repeat some computation until someД¬ondition is met, and you cannot calculate in advance when this will happen, as So any problem like вЂњiterate this weather model for 1000 cyclesвЂќ, or вЂњsearch Or if you need to print theДЎ2 times table, we know right away how many times the loop will need to run. Possibly need is вЂњall the elements in the listвЂќ. For example, if youвЂ™re traversingДЄ list of elements, you know that the maximum number of loop iterations you can Times that youвЂ™ll need to execute the body. Use a for loop if you know, before you start looping, the maximum number of So why have two kinds of loop if for looks easier? This next example showsДЄ case where we need the extra power that we get from the while loop. Test for completion, and then make sure you change something in the body so Loop one has to control the loop variable yourself: give it an initial value, The programmer - than the equivalent for loop. What you will notice here is that the while loop is more work for you. In other cases, it is not so easy to tell. Increments each time through the loop, so eventually it will have to equal The value of len(name) is finite, and we can see that the value of pos In the case here, we can prove that the loop terminates because we know that The directions on shampoo, lather, rinse, repeat, are an infinite loop. Loop will repeat forever, which is called an infinite loop.ДЄn endless source of amusement for computer programmers is the observation that The body of the loop should change the value of one or more variables so thatД®ventually the condition becomes false and the loop terminates. The body consists of all of the statements below the header with the same If the condition is true, execute each of the STATEMENTS in the body and If the condition is false, exit the while statement and continue The flow of execution for a while statement works like this:Д®valuate the condition ( BOOLEAN EXPRESSION), yielding False or The name was', name + '.' ) else : print ( ' Great, you got it in', pos + 1, 'guesses!' ) ', end = '' ) guess = input ( 'Guess again: ' ) pos = pos + 1 if pos = len ( name ) and name != guess : print ( 'Too bad, you couldn't get it. Try to guess it: ' ) pos = 0 while guess != name and pos < len ( name ): print ( 'Nope, that's not it! Hint: letter ', end = '' ) print ( pos + 1, 'is', name + '. Name = 'Harrison' guess = input ( 'So I'm thinking of person's name. The following program outputs a sequence of values in the left columnДЄnd 2 raised to the power of that value in the right column: In the table the Intel Pentium processor chip used to perform floating-pointДЄlthough a log table is not as useful as it once was, it still makes a goodД®xample. In some cases, there have been errors in the underlying tables, most famously For some operations, computers use tables of values to get anДЄpproximate answer and then perform computations to improve the approximation. Soon thereafter,Д¬omputers and calculators were so pervasive that the tables became obsolete. Is great! We can use the computers to generate the tables, so there will be noД®rrors.вЂќ That turned out to be true (mostly) but shortsighted. When computers appeared on the scene, one of the initial reactions was, вЂњThis

#Multiple or statements python full

The tables was slow and boring, and they tended to be full of errors.

To make that easier, mathematicsД«ooks contained long tables listing the values of these functions. Were readily available, people had to calculate logarithms, sines and cosines,ДЄnd other mathematical functions by hand. One of the things loops are good for is generating tables.

Multiple or statements python

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