Use Python 3 shebangs

ci/print_skipped.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 import os
 import xml.etree.ElementTree as et
 

doc/make.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 """
 Python script for building documentation.
 

doc/sphinxext/announce.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # -*- encoding:utf-8 -*-
 """
 Script to generate contributor and pull request lists

pandas/core/computation/eval.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 """
 Top level ``eval`` module.

pandas/tests/io/generate_legacy_storage_files.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 """
 self-contained to write legacy storage pickle files

pandas/tests/plotting/common.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # coding: utf-8
 
 import os

scripts/find_commits_touching_func.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # copyright 2013, y-p @ github
 """
 Search the git history for all commits touching a named method

scripts/generate_pip_deps_from_conda.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 """
 Convert the conda environment.yml to the pip requirements-dev.txt,
 or check that they have the same packages (for the CI)

scripts/validate_docstrings.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 """
 Analyze docstrings to detect errors.
 

scripts/validate_string_concatenation.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 """
 GH #30454
 

setup.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 """
 Parts of this file were taken from the pyzmq project

web/pandas_web.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 """
 Simple static site generator for the pandas web.