python - can't seem to get an output from my class -
i can't seem figure out wrong code , why not getting out. can't seem figure out how expand rectangle. instructions: create method called expand takes offset value , returns copy of rectangle expanded offset in directions.
>>> r = rectangle(30, 40, 100, 110) >>> print(r) rectangle(30, 40, 100, 110) >>> r1 = r.expand(offset=3) >>> print(r1) rectangle(27, 37, 106, 116) the original rectangle should not modified.
>>> print(r) rectangle(30, 40, 100, 110) negative values should return shrunken rectangle.
>>> r2 = r.expand(-5) >>> print(r2) rectangle(35, 45, 90, 100) this have far:
class rectangle: def __init__(self, initx, inity, initw, inith): self.x = initx self.y = inity self.w = initw self.h = inith def __str__(self): return('rectangle(' + str(self.x) + ',' + str(self.y) + ',' + str(self.w) + ',' + str(self.h)+')') def right(self): return self.x + self.w def top(self): return self.y + self.h def size(self): return '(' + self.w + ',' + self.h+ ')' def position(self): return '(' + self.x + ',' + self.y + ')' def area(self): return self.w * self.h def expand(self): # can't figure part out r = rectangle(5,10,50,100) r2 = rectangle(5,10,50,100) r3 = rectangle(3,5,10,20) r4 = rectangle(12,10,72,35) r5 = rectangle(5,7,10,6) r6 = rectangle(1,2,3,4) print(r2) print(r3.right()) print(r4.right()) print(r5.top()) print(r6.size()) print(r6.position()) print(r6.area())
def expand(self,expand): return rectangle(self.x - expand, self.y - expand, self.w + 2*expand, self.h + 2*expand) or more generic against future overload....
def expand(self,expand): return type(self)(self.x - expand, self.y - expand, self.w + 2*expand, self.h + 2*expand) and .... negative dimensions? maybe better fix in constructor:
def __init__(self, initx, inity, initw, inith): self.x = initx self.y = inity self.w = max(0,initw) self.h = max(0,inith) finally can talking subject of question: can't seem output class. maybe indentation issue, i'll rewrite script methods , fixing indentation issue.
class rectangle: def __init__(self, initx, inity, initw, inith): self.x = initx self.y = inity self.w = max(0,initw) self.h = max(0,inith) def __str__(self): return('rectangle(' + str(self.x) + ',' + str(self.y) + ',' + str(self.w) + ',' + str(self.h)+')') def right(self): return self.x + self.w def top(self): return self.y + self.h def size(self): return '(' + self.w + ',' + self.h+ ')' def position(self): return '(' + self.x + ',' + self.y + ')' def area(self): return self.w * self.h def expand(self,expand): return type(self)(self.x - expand, self.y - expand, self.w + 2*expand, self.h + 2*expand) r = rectangle(5,10,50,100) r2 = rectangle(5,10,50,100) r3 = rectangle(3,5,10,20) r4 = rectangle(12,10,72,35) r5 = rectangle(5,7,10,6) r6 = rectangle(1,2,3,4) print(r2) print(r3.right()) print(r4.right()) print(r5.top()) print(r6.size()) print(r6.position()) print(r6.area()) now should work expect. in code had put variable definitions , print statements in class definition.
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