Flower of Life

import math

def build(layers,radius=10,thickness=1,stroke="black",fill="none",eol='\r\n'):
    size=layers*radius*2+thickness*4
    cx=size/2.0
    cy=size/2.0
    if not callable(stroke):
        _stroke=stroke
        stroke=lambda layer,circle:_stroke
    if not callable(fill):
        _fill=fill
        fill=lambda layer,circle:_fill
    xml='<?xml version="1.0" standalone="no"?>'+eol
    xml+='<!DOCTYPE svg>'+eol
    xml+='<svg version="1.1" width="%i" height="%i">'%(size,size)+eol
    xml+='\t<!-- Center -->'+eol
    xml+='\t<circle cx="%s" cy="%s" r="%s" stroke="%s" stroke-width="%s" fill="%s"/>'%(cx,cy,radius,stroke(0,0),thickness,fill(0,0))+eol
    turtle=[5*math.pi/6,cx,cy] #direction,x,y
    layer=1
    while layer<layers:
        xml+='\t<!-- Layer %i -->'%layer+eol
        circle=0
        turtle[2]-=radius
        while circle<6*layer:
            xml+='\t<circle cx="%s" cy="%s" r="%s" stroke="%s" stroke-width="%s" fill="%s"/>'%(turtle[1],turtle[2],radius,stroke(layer,circle),thickness,fill(layer,circle))+eol
            if circle%layer==0:
                turtle[0]+=math.pi/3
            turtle[1]+=radius*math.cos(turtle[0])
            turtle[2]-=radius*math.sin(turtle[0])
            circle+=1
        layer+=1
    xml+='</svg>'
    return xml

f=open('fol.svg','w')
f.write(build(5))
f.close()