CI move code directives to pre-commit, remove some outdated checks (pandas-dev#37241)

Author: MarcoGorelli

.pre-commit-config.yaml

@@ -62,6 +62,11 @@ repos:
             |math|module|note|raw|seealso|toctree|versionadded
             |versionchanged|warning):[^:]
         files: \.(py|pyx|rst)$
+    -   id: incorrect-code-directives
+        name: Check for incorrect code block or IPython directives
+        language: pygrep
+        entry: (\.\. code-block ::|\.\. ipython ::)
+        files: \.(py|pyx|rst)$
 -   repo: https://github.com/asottile/yesqa
     rev: v1.2.2
     hooks:

ci/code_checks.sh

@@ -207,18 +207,6 @@ if [[ -z "$CHECK" || "$CHECK" == "patterns" ]]; then
     invgrep -r -E --include '*.py' '(unittest(\.| import )mock|mock\.Mock\(\)|mock\.patch)' pandas/tests/
     RET=$(($RET + $?)) ; echo $MSG "DONE"
 
-    MSG='Check for wrong space after code-block directive and before colon (".. code-block ::" instead of ".. code-block::")' ; echo $MSG
-    invgrep -R --include="*.rst" ".. code-block ::" doc/source
-    RET=$(($RET + $?)) ; echo $MSG "DONE"
-
-    MSG='Check for wrong space after ipython directive and before colon (".. ipython ::" instead of ".. ipython::")' ; echo $MSG
-    invgrep -R --include="*.rst" ".. ipython ::" doc/source
-    RET=$(($RET + $?)) ; echo $MSG "DONE"
-
-    MSG='Check for extra blank lines after the class definition' ; echo $MSG
-    invgrep -R --include="*.py" --include="*.pyx" -E 'class.*:\n\n( )+"""' .
-    RET=$(($RET + $?)) ; echo $MSG "DONE"
-
     MSG='Check for use of {foo!r} instead of {repr(foo)}' ; echo $MSG
     invgrep -R --include=*.{py,pyx} '!r}' pandas
     RET=$(($RET + $?)) ; echo $MSG "DONE"
@@ -243,12 +231,6 @@ if [[ -z "$CHECK" || "$CHECK" == "patterns" ]]; then
     invgrep -R --include=*.{py,pyx} '\.__class__' pandas
     RET=$(($RET + $?)) ; echo $MSG "DONE"
 
-    MSG='Check that no file in the repo contains trailing whitespaces' ; echo $MSG
-    INVGREP_APPEND=" <- trailing whitespaces found"
-    invgrep -RI --exclude=\*.{svg,c,cpp,html,js} --exclude-dir=env "\s$" *
-    RET=$(($RET + $?)) ; echo $MSG "DONE"
-    unset INVGREP_APPEND
-
     MSG='Check code for instances of os.remove' ; echo $MSG
     invgrep -R --include="*.py*" --exclude "common.py" --exclude "test_writers.py" --exclude "test_store.py" -E "os\.remove" pandas/tests/
     RET=$(($RET + $?)) ; echo $MSG "DONE"