函数内的 Else 语句计数器

Question

import rhinoscriptsyntax as rs

def conCir(pt, r):
    if r <= 0:
        print "Done"
    else:
        rs.AddCircle(pt, r)
        return conCir(pt, r-1)

pt1 = rs.GetPoint("Pick First Point")
pt2 = rs.GetPoint("Pick Second Point")
r = rs.Distance(pt1, pt2)
conCir(pt1, r)

我尝试做的是制作同心圆，但是，我不知道如何计算创建的圆的数量。在理想情况下，这个计数器嵌入在函数中，但将它放在第一行会使它在每次调用函数时都重置为 0。

明确一点，函数完成后需要打印 "Done"、计数、"circles were drawn."

Answer 1

在递归调用中传递一个计数器，打印时打印出来Done

def conCir(pt, r, count=0):
    if r <= 0:
        print "Done"
        print count, " circles were drawn"
    else:
        rs.AddCircle(pt, r)
        return conCir(pt, r-1, count+1)

Answer 2

同Barmar的回答，扩展调试打印

Python 3 打印()

只是打印而不是调用 Circle 进行说明

为递归添加了默认变量count = 0

def conCir(pt, r, count = 0):
    if r <= 0:
        print("Done", 'count= ', count)
    else:
        print('AddinCircle ',pt, r) # rs.AddCircle(pt, r)
        return conCir(pt, r-1, count + 1)

conCir('fred', 5) # count default = 0, no need to enter in call

AddinCircle  fred 5
AddinCircle  fred 4
AddinCircle  fred 3
AddinCircle  fred 2
AddinCircle  fred 1
Done count=  5

函数内的 Else 语句计数器

Else statement counter within function

python

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