* Lib/whrandom.py: if seed is (0,0,0), initialize from current

gvanrossum · gvanrossum · commit 14a6e3d5e8f9 · 1994-09-14T13:33:57.000Z
time; default seed's arguments to (0,0,0)
diff --git a/Lib/whrandom.py b/Lib/whrandom.py
@@ -35,24 +35,24 @@ class whrandom:
 	# Without arguments, initialize from current time.
 	# With arguments (x, y, z), initialize from them.
 	#
-	def __init__(self, x = None, y = None, z = None):
-		if x is None:
-			# Initialize from current time
-			import time
-			t = int(time.time() % 0x80000000)
-			t, x = divmod(t, 256)
-			t, y = divmod(t, 256)
-			t, z = divmod(t, 256)
+	def __init__(self, x = 0, y = 0, z = 0):
 		self.seed(x, y, z)
 	#
 	# Set the seed from (x, y, z).
 	# These must be integers in the range [0, 256).
 	#
-	def seed(self, x, y, z):
+	def seed(self, x = 0, y = 0, z = 0):
 		if not type(x) == type(y) == type(z) == type(0):
 			raise TypeError, 'seeds must be integers'
 		if not 0 <= x < 256 and 0 <= y < 256 and 0 <= z < 256:
 			raise ValueError, 'seeds must be in range(0, 256)'
+		if 0 == x == y == z:
+			# Initialize from current time
+			import time
+			t = int(time.time() % 0x80000000)
+			t, x = divmod(t, 256)
+			t, y = divmod(t, 256)
+			t, z = divmod(t, 256)
 		self._seed = (x, y, z)
 	#
 	# Get the next random number in the range [0.0, 1.0).
