From 38c226914e145bc6d96cdce7101722bb6513327c Mon Sep 17 00:00:00 2001
From: HyukjinKwon <gurwls223@apache.org>
Date: Wed, 1 May 2019 17:01:39 +0900
Subject: [PATCH 1/4] Fix doctests in GroupBy.mean() to check output

---
 pandas/core/groupby/groupby.py | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/pandas/core/groupby/groupby.py b/pandas/core/groupby/groupby.py
index bd8a8852964e3..fc094243806ea 100644
--- a/pandas/core/groupby/groupby.py
+++ b/pandas/core/groupby/groupby.py
@@ -1117,7 +1117,6 @@ def mean(self, *args, **kwargs):
         each group.
 
         >>> df.groupby('A').mean()
-        >>>
              B         C
         A
         1  3.0  1.333333
@@ -1126,7 +1125,6 @@ def mean(self, *args, **kwargs):
         Groupby two columns and return the mean of the remaining column.
 
         >>> df.groupby(['A', 'B']).mean()
-        >>>
                C
         A B
         1 2.0  2
@@ -1138,7 +1136,6 @@ def mean(self, *args, **kwargs):
         the group.
 
         >>> df.groupby('A')['B'].mean()
-        >>>
         A
         1    3.0
         2    4.0

From 5613fd36b30f3f15c73b7ae0920fcde87ae70c8a Mon Sep 17 00:00:00 2001
From: HyukjinKwon <gurwls223@apache.org>
Date: Wed, 1 May 2019 21:34:15 +0900
Subject: [PATCH 2/4] check groupby.py as well in CI

---
 ci/code_checks.sh | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/ci/code_checks.sh b/ci/code_checks.sh
index 51edc218cc2bd..3f0e172cfd6f5 100755
--- a/ci/code_checks.sh
+++ b/ci/code_checks.sh
@@ -227,7 +227,9 @@ if [[ -z "$CHECK" || "$CHECK" == "doctests" ]]; then
     RET=$(($RET + $?)) ; echo $MSG "DONE"
 
     MSG='Doctests generic.py' ; echo $MSG
-    pytest -q --doctest-modules pandas/core/generic.py \
+    pytest -q --doctest-modules \
+        pandas/core/generic.py \
+        pandas/core/groupby/groupby.py \
         -k"-_set_axis_name -_xs -describe -droplevel -groupby -interpolate -pct_change -pipe -reindex -reindex_axis -to_json -transpose -values -xs -to_clipboard"
     RET=$(($RET + $?)) ; echo $MSG "DONE"
 

From 01c1f5cb315aaa536d82cbbb3aa67da8c38f8507 Mon Sep 17 00:00:00 2001
From: HyukjinKwon <gurwls223@apache.org>
Date: Wed, 1 May 2019 22:21:26 +0900
Subject: [PATCH 3/4] Add a new block for groupby.py

---
 ci/code_checks.sh | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/ci/code_checks.sh b/ci/code_checks.sh
index 3f0e172cfd6f5..6e9a6b7f5c7d6 100755
--- a/ci/code_checks.sh
+++ b/ci/code_checks.sh
@@ -227,12 +227,14 @@ if [[ -z "$CHECK" || "$CHECK" == "doctests" ]]; then
     RET=$(($RET + $?)) ; echo $MSG "DONE"
 
     MSG='Doctests generic.py' ; echo $MSG
-    pytest -q --doctest-modules \
-        pandas/core/generic.py \
-        pandas/core/groupby/groupby.py \
+    pytest -q --doctest-modules pandas/core/generic.py \
         -k"-_set_axis_name -_xs -describe -droplevel -groupby -interpolate -pct_change -pipe -reindex -reindex_axis -to_json -transpose -values -xs -to_clipboard"
     RET=$(($RET + $?)) ; echo $MSG "DONE"
 
+    MSG='Doctests groupby.py' ; echo $MSG
+    pytest -q --doctest-modules pandas/core/groupby/groupby.py
+    RET=$(($RET + $?)) ; echo $MSG "DONE"
+
     MSG='Doctests top-level reshaping functions' ; echo $MSG
     pytest -q --doctest-modules \
         pandas/core/reshape/concat.py \

From 9b2dd4622ba1d87658b2705de27ef6eac9b08913 Mon Sep 17 00:00:00 2001
From: HyukjinKwon <gurwls223@apache.org>
Date: Wed, 1 May 2019 23:23:27 +0900
Subject: [PATCH 4/4] Fix tests and exclude some tests

---
 ci/code_checks.sh              | 2 +-
 pandas/core/groupby/groupby.py | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/ci/code_checks.sh b/ci/code_checks.sh
index 6e9a6b7f5c7d6..1f9ada185f9a3 100755
--- a/ci/code_checks.sh
+++ b/ci/code_checks.sh
@@ -232,7 +232,7 @@ if [[ -z "$CHECK" || "$CHECK" == "doctests" ]]; then
     RET=$(($RET + $?)) ; echo $MSG "DONE"
 
     MSG='Doctests groupby.py' ; echo $MSG
-    pytest -q --doctest-modules pandas/core/groupby/groupby.py
+    pytest -q --doctest-modules pandas/core/groupby/groupby.py -k"-cumcount -describe -pipe"
     RET=$(($RET + $?)) ; echo $MSG "DONE"
 
     MSG='Doctests top-level reshaping functions' ; echo $MSG
diff --git a/pandas/core/groupby/groupby.py b/pandas/core/groupby/groupby.py
index fc094243806ea..2eb9171668d35 100644
--- a/pandas/core/groupby/groupby.py
+++ b/pandas/core/groupby/groupby.py
@@ -2142,7 +2142,7 @@ def head(self, n=5):
         --------
 
         >>> df = pd.DataFrame([[1, 2], [1, 4], [5, 6]],
-                              columns=['A', 'B'])
+        ...                   columns=['A', 'B'])
         >>> df.groupby('A', as_index=False).head(1)
            A  B
         0  1  2
@@ -2169,7 +2169,7 @@ def tail(self, n=5):
         --------
 
         >>> df = pd.DataFrame([['a', 1], ['a', 2], ['b', 1], ['b', 2]],
-                              columns=['A', 'B'])
+        ...                   columns=['A', 'B'])
         >>> df.groupby('A').tail(1)
            A  B
         1  a  2