commit 5eabf246b609466c4cd244d32ecb2f780cfeed8c
author Miss Islington (bot) <31488909+miss-islington@users.noreply.github.com> Wed Jul 28 07:08:51 2021 -0700
committer GitHub <noreply@github.com> Wed Jul 28 16:08:51 2021 +0200
tree 2485fc780ffa8c026f620eccf4c28188a8a8ab98
parent 0993837766ee4b88de593eaf3a9a14852c82724c

Change type check to isinstance in pipes (GH-27291) (GH-27416)

(cherry picked from commit 9ffbb899462b819864f777d0228fb8f1bb89b018)

Co-authored-by: Anton Grübel <anton.gruebel@gmail.com>

Lib/pipes.py

diff --git a/Lib/pipes.py b/Lib/pipes.py
index f1a16f6..8cc74b0 100644
--- a/Lib/pipes.py
+++ b/Lib/pipes.py
@@ -109,7 +109,7 @@ def debug(self, flag):
 
     def append(self, cmd, kind):
         """t.append(cmd, kind) adds a new step at the end."""
-        if type(cmd) is not type(''):
+        if not isinstance(cmd, str):
             raise TypeError('Template.append: cmd must be a string')
         if kind not in stepkinds:
             raise ValueError('Template.append: bad kind %r' % (kind,))
@@ -125,7 +125,7 @@ def append(self, cmd, kind):
 
     def prepend(self, cmd, kind):
         """t.prepend(cmd, kind) adds a new step at the front."""
-        if type(cmd) is not type(''):
+        if not isinstance(cmd, str):
             raise TypeError('Template.prepend: cmd must be a string')
         if kind not in stepkinds:
             raise ValueError('Template.prepend: bad kind %r' % (kind,))