python - how to print out fibonacci in this format? -

-

function name: p​rintfibonacci()​ job write function takes in 2 parameters , prints out fibonacci sequence (in same line, separated commas!) using parameters. fibonacci sequence produced adding 2 preceding numbers produce next integer. 2 parameters user inputs first 2 numbers add start sequence. function should stop when last number printed more 300. remember, numbers must printed in same line commas separating them. it's okay if output wraps around new line. key print single string. don't need print parameters part of output. can assume user input @ least 1 non­zero parameter.

it should this:

>>> printfibonacci(1,9)  10,19,29,48,77,125,202,327 >>> printfibonacci(2,3)  5,8,13,21,34,55,89,144,233,377 python>>> printfibonacci(1,1)  2,3,5,8,13,21,34,55,89,144,233,377

so far have this

def printfibonacci(a,b):     count = 0     max_count = 10     while count < max_count:         count = count + 1         old_a =         old_b = b         = old_b         b = old_a + old_b         print (old_a)

but not print in 1 line comas , don't know how make stop @ 300.

ok, have worked on , have works better:

def printfibonacci(a,b): count = 0 maxnumber = 299 while b < 200:     begin = a+b     , b = b , begin     start =     end = b     print ((start)+ (end),end=",")

i having 2 little problems, 1 printing out coma @ end of string well, how rid of it?? , first number given me sum of first 2 , not 2 parameters

do own homework! (don't submit solution; uses concepts haven't learned yet).

#!/usr/bin/env python2.7  def printfibonacci(a, b):     while b < 300:         a, b = b, a+b         yield b  def main():     tests = [(1, 9), (2, 3), (1, 1)]     test in tests:         print ', '.join(str(n) n in printfibonacci(*test))  if __name__ == '__main__':     main()

output:

10, 19, 29, 48, 77, 125, 202, 327

5, 8, 13, 21, 34, 55, 89, 144, 233, 377

2, 3, 5, 8, 13, 21, 34, 55, 89, 144, 233, 377


Comments

Post a Comment

Popular posts from this blog

python - TypeError: start must be a integer -

-
i trying draw 5 turtles, getting typeerror on line 25. here code: import turtle wn = turtle.screen() redrose = turtle.turtle() color = input("what background color be?") fillcolor_f = input("what color of rose be?") redrose.hideturtle() redrose.speed(30) redrose.penup() redrose.left(180) redrose.forward(175) redrose.right(90) redrose.forward(30) redrose.right(90) redrose.pendown() def drawrose(red): redrose.color("pink") redrose.fillcolor(fillcolor_f) redrose.fill(true) in range(red): redrose.forward(i) redrose.right(49) in range(5): drawrose(redrose) redrose.penup() redrose.forward(350) redrose.right(144) redrose.pendown() redrose.fill(false) drawrose(50) wn.bgcolor(color) i trying draw 5 roses, produces errors. doing in interactivepython.org. you recursively calling drawrose wrong parameter. on line 23 ( for in range(red): ) expect red integer...
Read more

c# - DevExpress RepositoryItemComboBox BackColor property ignored -

-
i have following code almost works properly; private void cbstatus_drawitem(object sender, listboxdrawitemeventargs e) { string item = e.item string; if (item != null) { switch (item) { case "1": e.appearance.forecolor = color.green; e.appearance.backcolor = color.green; break; case "2": e.appearance.forecolor = color.orange; e.appearance.backcolor = color.orange; break; case "3": e.appearance.forecolor = color.red; e.appearance.backcolor = color.red; break; } } } when dropdown shown, items forecolor correct, backcolor remains whatever backcolor of theme is; i.e. if i've got set dark theme, backcolor dark, cells in gridview, rather being green/orange/red. i've tried setting e.appearance.options.usebackcolor trying set e....
Read more

django - Creating multiple model instances in DRF3 -

-
1) create multiple model instances 1 api call, asked here: how create multiple model instances django rest framework? tried solution named in link, no success. i trying upload multiple files in 1 api call. result: files uploaded (only once overwrote perform_create) 1 instance created (if send 2 files, latter created instance). my code: class fileuploadserializer(serializers.modelserializer): def __init__(self, *args, **kwargs): many = kwargs.pop('many', true) super(fileuploadserializer, self).__init__(many=many, *args, **kwargs) class meta: model = fileupload read_only_fields = ('created', 'datafile', 'owner') class fileuploadviewset(viewsets.modelviewset): queryset = fileupload.objects.all() serializer_class = fileuploadserializer parser_classes = (multipartparser, formparser, ) def perform_create(self, serializer): file_list = self.request.data.getlist('file') ...
Read more