create a template for Blob and BeadFinder classes in beadfinder.py

accourding to the Atomic-Nature.pdf file

beadfinder.py

@@ -0,0 +1,37 @@
+import sys
+from stdlibrary import picture, color
+
+
+class Blob:
+    pixels = []
+
+    def add(self, x, y):
+        pass
+
+    def mass(self):
+        pass
+
+    def distanceTo(self, c):
+        pass
+
+    def __str__(self):
+        return str(len(self.pixels))
+
+
+class BeadFinder:
+    def __init__(self, pic, tau):
+        pass
+
+    def getBeads(self, min_pixels):
+        pass
+
+
+def main():
+    min_pixels = int(sys.argv[1])
+    tau = float(sys.argv[2])
+    input_file = sys.argv[3]
+
+    bf = BeadFinder(input_file, tau)
+
+    for blb in bf.getBeads(min_pixels):
+        print(blb)