DM-13339: shebang needs to be changed in several places in bin.src directories

.gitignore

@@ -5,6 +5,7 @@
 *.pyc
 pytest_session.txt
 .cache
+.pytest_cache
 /*.fits
 *_wrap.cc
 *Lib.py

examples/exampleCmdLineTask.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python2
+#!/usr/bin/env python
 #
 # LSST Data Management System
 # Copyright 2014 LSST Corporation.

python/lsst/pipe/tasks/ingest.py

@@ -1,4 +1,3 @@
-from past.builtins import basestring
 import os
 import shutil
 import tempfile
@@ -115,7 +114,7 @@ def getInfoFromMetadata(self, md, info=None):
         for p, h in self.config.translation.items():
             if md.exists(h):
                 value = md.get(h)
-                if isinstance(value, basestring):
+                if isinstance(value, str):
                     value = value.strip()
                 info[p] = value
             elif p in self.config.defaults:

setup.cfg

@@ -3,7 +3,7 @@ max-line-length = 110
 ignore = E133, E226, E228, E266, N802, N803, N806
 # TODO: remove E266 when Task documentation is converted to rst in DM-14207.
 exclude =
-    __init__.py,
+    __init__.py
     tests/data/*
     tests/.tests/*
     tests/astrometry_net_data/*

tests/nopytest_test_coadds.py

@@ -47,13 +47,13 @@
 this data will be created for every sub-process, leading to excessive disk
 usage, excessive test execution times and possible failure.
 """
-from past.builtins import basestring
 
 import unittest
 import shutil
 import os
 import numbers
 from collections import Iterable
+
 import numpy as np
 
 import lsst.utils.tests
@@ -480,7 +480,7 @@ def testAlgMetadataOutput(self):
             # case the value can properly be extracted and compared.
 
             def ensureIterable(x):
-                if isinstance(x, Iterable) and not isinstance(x, basestring):
+                if isinstance(x, Iterable) and not isinstance(x, str):
                     return x
                 return [x]
             for nOffset in ensureIterable(meta.get('NOISE_OFFSET')):

ups/pipe_tasks.table

@@ -6,7 +6,6 @@ setupRequired(pipe_base)
 setupRequired(pex_config)
 setupRequired(utils)
 setupRequired(obs_base)
-setupRequired(python_future)
 setupOptional(meas_algorithms)
 setupOptional(meas_astrom)
 setupOptional(meas_extensions_astrometryNet)