fit start on iteration

sagemath · Jan 17, 2016 · 1136a64 · 1136a64
1 parent fb86dbf
commit 1136a64
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/src/sage/misc/lazy_list.pyx b/src/sage/misc/lazy_list.pyx
@@ -796,9 +796,16 @@ cdef class lazy_list_generic(object):
             start        0
             stop         5
             step         1
+
+        ::
+
+            sage: tuple(lazy_list(Primes()).dropwhile(lambda x: x < 10)[:5])
+            (11, 13, 17, 19, 23)
         """
         cdef Py_ssize_t i
 
+        if self._fit(self.start):
+            return
         i = self.start
         while i < self.stop:
             if self._fit(i):