Lines to get filled=True to work with it. Hint: You will need to use a Polygon for the roof instead of two Named houses.py that produces the following when run: Use draw_house to place five houses on the canvas in differentĮxploration: Read over Appendix B and write a script.Because JavaScript automatically converts data types when needed, though, this is not. Should then become def draw_house(x, y):, so that you can pass in Usually, if two values have different types, then they are not equal. Parameterize the function with x and y parameters – the header.Add a call to draw_house() at the botton of the script so that the.Wrap the house code in a function named draw_house().Run this script and confirm that you get a window that looks like Statements in question are going to be used multiple times.įrom gasp import * # import everything from the gasp library begin_graphics () # open the graphics canvas Box (( 20, 20 ), 100, 100 ) # the house Box (( 55, 20 ), 30, 50 ) # the door Box (( 40, 80 ), 20, 20 ) # the left window Box (( 80, 80 ), 20, 20 ) # the right window Line (( 20, 120 ), ( 70, 160 )) # the left roof Line (( 70, 160 ), ( 120, 120 )) # the right roof update_when ( 'key_pressed' ) # keep the canvas open until a key is pressed end_graphics () # close the canvas (which would happen # anyway, since the script ends here, but it # is better to be explicit). This process is very useful whenever the program Of program statements is often refered to as “wrapping the code inĪ function”. wrapping code in a function The process of adding a function header and parameters to a sequence type conversion An explicit statement that takes a value of one type and computes aĬorresponding value of another type. prompt A visual cue that tells the user to input data. Comparison Operators Comparison operators are used in logical statements to determine equality or difference between variables or values. Inside a branch of another conditional statement. JavaScript Comparison and Logical Operators Previous Next Comparison and Logical operators are used to test for true or false. nesting One program structure within another, such as a conditional statement Integers and yields the remainder when one number is divided byĪnother. modulus operator An operator, denoted with a percent sign ( %), that works on logical operator One of the operators that combines boolean expressions: and, In Python the keywords if, elif, and else are conditional statement A statement that controls the flow of execution depending on someĬondition. condition The boolean expression in a conditional statement that determines whichīranch is executed. comparison operator One of the operators that compares two values: =, !=, >, Python chained conditionals are written with if. chained conditional A conditional branch with more than two possible flows of execution. branch One of the possible paths of the flow of execution determined byĬonditional execution. Values result when a boolean expression is evaluated by the Python boolean value There are exactly two boolean values: True and False. boolean expression An expression that is either true or false. body The block of statements in a compound statement that follows the Glossary ¶ block A group of consecutive statements with the same indentation. Since Duration values are not comparable, the result of applying a comparison operator between two Duration values is null.4.12. If the type, point in time, offset, and time zone name are all equal, then the values are equal, and any difference in order is impossible to observe.ĭuration values cannot be compared, since the length of a day, month or year is not known without knowing which day, month or year it is. If two instant values represent the same point in time, and have the same time zone offset, but a different named time zone (this is possible for DateTime only, since Time only has an offset), these values are not considered equal, and ordered by the time zone identifier, alphabetically, as its third ordering component. This has the effect that times that represent the same point in time will be ordered with the time with the earliest local time first. Instant values that occur at the same point in time - but that have a different time zone - are not considered equal, and must therefore be ordered in some predictable way.Ĭypher prescribes that, after the primary order of point in time, instant values be ordered by effective time zone offset, from west (negative offset from UTC) to east (positive offset from UTC). Temporal instant values are comparable within the same type.Īn instant is considered less than another instant if it occurs before that instant in time, and it is considered greater than if it occurs after.
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