From fd86b6417cd59c05a78922f4ded9e1ca792a0a5b Mon Sep 17 00:00:00 2001
From: MomIsBestFriend <>
Date: Fri, 28 Feb 2020 14:24:58 +0200
Subject: [PATCH 1/2] CLN: using "n" variable to loop

---
 pandas/_libs/interval.pyx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pandas/_libs/interval.pyx b/pandas/_libs/interval.pyx
index 1166768472449..8c509007e13c8 100644
--- a/pandas/_libs/interval.pyx
+++ b/pandas/_libs/interval.pyx
@@ -509,7 +509,7 @@ def intervals_to_interval_bounds(ndarray intervals,
     left = np.empty(n, dtype=intervals.dtype)
     right = np.empty(n, dtype=intervals.dtype)
 
-    for i in range(len(intervals)):
+    for i in range(n):
         interval = intervals[i]
         if interval is None or util.is_nan(interval):
             left[i] = np.nan

From ea2d8426879e20369a53ef7da499b2ddb4970138 Mon Sep 17 00:00:00 2001
From: MomIsBestFriend <>
Date: Fri, 28 Feb 2020 14:27:33 +0200
Subject: [PATCH 2/2] cdef for "i" as index and for "n" as the length

---
 pandas/_libs/interval.pyx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pandas/_libs/interval.pyx b/pandas/_libs/interval.pyx
index 8c509007e13c8..50ac055dbffc9 100644
--- a/pandas/_libs/interval.pyx
+++ b/pandas/_libs/interval.pyx
@@ -502,7 +502,7 @@ def intervals_to_interval_bounds(ndarray intervals,
     """
     cdef:
         object closed = None, interval
-        int64_t n = len(intervals)
+        Py_ssize_t i, n = len(intervals)
         ndarray left, right
         bint seen_closed = False