From 2bd86299ae11e069eab702d5b2775dc71b1b072c Mon Sep 17 00:00:00 2001
From: Tom Augspurger <tom.augspurger88@gmail.com>
Date: Tue, 27 Dec 2016 15:41:00 -0600
Subject: [PATCH] BUG: Fixed to_html with index=False and max_rows

closes https://github.com/pandas-dev/pandas/issues/14998

Previously raised an IndexError by assuming that
`len(fmt_values)` was always the same length as `len(self.data)`.
---
 doc/source/whatsnew/v0.20.0.txt     |  6 ++++++
 pandas/formats/format.py            |  2 +-
 pandas/tests/formats/test_format.py | 19 +++++++++++++++++++
 3 files changed, 26 insertions(+), 1 deletion(-)

diff --git a/doc/source/whatsnew/v0.20.0.txt b/doc/source/whatsnew/v0.20.0.txt
index 0873e4b34b0b1..5e27c6e9cc293 100644
--- a/doc/source/whatsnew/v0.20.0.txt
+++ b/doc/source/whatsnew/v0.20.0.txt
@@ -313,6 +313,12 @@ Bug Fixes
 
 
 
+- Bug in ``DataFrame.to_html`` with ``index=False`` and ``max_rows`` raising in ``IndexError`` (:issue:`14998`)
+
+
+
+
+
 
 
 
diff --git a/pandas/formats/format.py b/pandas/formats/format.py
index 0cf6050e515e0..a3319437474c2 100644
--- a/pandas/formats/format.py
+++ b/pandas/formats/format.py
@@ -1182,7 +1182,7 @@ def _write_body(self, indent):
             else:
                 self._write_regular_rows(fmt_values, indent)
         else:
-            for i in range(len(self.frame)):
+            for i in range(min(len(self.frame), self.max_rows)):
                 row = [fmt_values[j][i] for j in range(len(self.columns))]
                 self.write_tr(row, indent, self.indent_delta, tags=None)
 
diff --git a/pandas/tests/formats/test_format.py b/pandas/tests/formats/test_format.py
index e7c32a4baa4ea..00e5e002ca48d 100644
--- a/pandas/tests/formats/test_format.py
+++ b/pandas/tests/formats/test_format.py
@@ -2771,6 +2771,25 @@ def test_to_html_with_classes(self):
         result = df.to_html(classes=["sortable", "draggable"])
         self.assertEqual(result, expected)
 
+    def test_to_html_no_index_max_rows(self):
+        # GH https://github.com/pandas-dev/pandas/issues/14998
+        df = DataFrame({"A": [1, 2, 3, 4]})
+        result = df.to_html(index=False, max_rows=1)
+        expected = dedent("""\
+        <table border="1" class="dataframe">
+          <thead>
+            <tr style="text-align: right;">
+              <th>A</th>
+            </tr>
+          </thead>
+          <tbody>
+            <tr>
+              <td>1</td>
+            </tr>
+          </tbody>
+        </table>""")
+        self.assertEqual(result, expected)
+
     def test_pprint_pathological_object(self):
         """
         if the test fails, the stack will overflow and nose crash,