STYLE: Fix isort failure in range.py (#23231)

Author: gfyoung

ci/code_checks.sh

@@ -16,7 +16,7 @@
 
 echo "inside $0"
 [[ $LINT ]] || { echo "NOT Linting. To lint use: LINT=true $0 $1"; exit 0; }
-[[ -z "$1" || "$1" == "lint" || "$1" == "patterns" || "$1" == "doctests" ]] || { echo "Unkown command $1. Usage: $0 [lint|patterns|doctests]"; exit 9999; }
+[[ -z "$1" || "$1" == "lint" || "$1" == "patterns" || "$1" == "doctests" ]] || { echo "Unknown command $1. Usage: $0 [lint|patterns|doctests]"; exit 9999; }
 
 source activate pandas
 RET=0

pandas/core/indexes/range.py

@@ -1,7 +1,7 @@
 import operator
+import warnings
 from datetime import timedelta
 from sys import getsizeof
-import warnings
 
 import numpy as np