Merge pull request #150 from rivese/generator

markcharyk · markcharyk · commit ba2cd3bc0975 · 2014-05-31T13:20:31.000-07:00
Generator assignment
diff --git a/students/ElizabethRives/generator.py b/students/ElizabethRives/generator.py
@@ -0,0 +1,69 @@
+#!/usr/bin/env python
+
+
+import itertools
+
+
+def intsum(): 
+	u"""Generate a sequence that adds the next integer."""
+
+	a = 0
+	yield a
+	
+	for i in itertools.count(1, 1):
+		a = a + i
+		yield a
+
+
+def doubler(): 
+	u"""Generate a sequence that doubles the previous value."""
+
+	a = 1
+	yield a
+
+	while True:
+		a = 2 * a
+		yield a
+
+
+def fib():
+	u"""Generate the fibonacci series."""
+	
+	a, b = 0, 1
+
+	while True:
+		a, b = b, a + b
+		yield a
+
+
+def prime():
+	u"""Simply generate the prime numbers."""
+
+	for i in itertools.count(2, 1):
+		for a in range(2, i):
+			if i%a == 0:
+				break
+		else:
+			yield i
+
+
+
+
+	
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+	
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+
