diff --git a/Lib/test/test_faulthandler.py b/Lib/test/test_faulthandler.py
--- a/Lib/test/test_faulthandler.py
+++ b/Lib/test/test_faulthandler.py
@@ -10,6 +10,7 @@
 from test.script_helper import assert_python_ok
 import tempfile
 import unittest
+from textwrap import dedent
 
 try:
     import threading
@@ -51,6 +52,7 @@
         build, and replace "Current thread 0x00007f8d8fbd9700" by "Current
         thread XXX".
         """
+        code = dedent(code).strip()
         with support.SuppressCrashReport():
             process = script_helper.spawn_python('-c', code)
         stdout, stderr = process.communicate()
@@ -84,11 +86,11 @@
 
 {header}:
   File "<string>", line {lineno} in <module>
-""".strip()
-        regex = regex.format(
+            """
+        regex = dedent(regex.format(
             lineno=line_number,
             name=name_regex,
-            header=re.escape(header))
+            header=re.escape(header))).strip()
         if other_regex:
             regex += '|' + other_regex
         output, exitcode = self.get_output(code, filename)
@@ -103,7 +105,7 @@
 import faulthandler
 faulthandler.enable()
 faulthandler._read_null()
-""".strip(),
+            """,
             3,
             # Issue #12700: Read NULL raises SIGILL on Mac OS X Lion
             '(?:Segmentation fault|Bus error|Illegal instruction)')
@@ -113,7 +115,7 @@
 import faulthandler
 faulthandler.enable()
 faulthandler._sigsegv()
-""".strip(),
+            """,
             3,
             'Segmentation fault')
 
@@ -122,7 +124,7 @@
 import faulthandler
 faulthandler.enable()
 faulthandler._sigabrt()
-""".strip(),
+            """,
             3,
             'Aborted')
 
@@ -133,7 +135,7 @@
 import faulthandler
 faulthandler.enable()
 faulthandler._sigfpe()
-""".strip(),
+            """,
             3,
             'Floating point exception')
 
@@ -147,7 +149,7 @@
 
 faulthandler.enable()
 _testcapi.raise_signal(signal.SIGBUS)
-""".strip(),
+            """,
             6,
             'Bus error')
 
@@ -161,7 +163,7 @@
 
 faulthandler.enable()
 _testcapi.raise_signal(signal.SIGILL)
-""".strip(),
+            """,
             6,
             'Illegal instruction')
 
@@ -169,7 +171,7 @@
         self.check_fatal_error("""
 import faulthandler
 faulthandler._fatal_error(b'xyz')
-""".strip(),
+            """,
             2,
             'xyz')
 
@@ -183,7 +185,7 @@
 import faulthandler
 faulthandler.enable()
 faulthandler._stack_overflow()
-""".strip(),
+            """,
             3,
             '(?:Segmentation fault|Bus error)',
             other_regex='unable to raise a stack overflow')
@@ -193,7 +195,7 @@
 import faulthandler
 faulthandler.enable()
 faulthandler._read_null(True)
-""".strip(),
+            """,
             3,
             '(?:Segmentation fault|Bus error|Illegal instruction)')
 
@@ -204,7 +206,7 @@
 output = open({filename}, 'wb')
 faulthandler.enable(output)
 faulthandler._sigsegv()
-""".strip().format(filename=repr(filename)),
+                """.format(filename=repr(filename)),
                 4,
                 'Segmentation fault',
                 filename=filename)
@@ -214,7 +216,7 @@
 import faulthandler
 faulthandler.enable(all_threads=False)
 faulthandler._sigsegv()
-""".strip(),
+            """,
             3,
             'Segmentation fault',
             all_threads=False)
@@ -225,7 +227,7 @@
 faulthandler.enable()
 faulthandler.disable()
 faulthandler._sigsegv()
-""".strip()
+            """
         not_expected = 'Fatal Python error'
         stderr, exitcode = self.get_output(code)
         stder = '\n'.join(stderr)
@@ -306,7 +308,7 @@
     funcB()
 
 funcA()
-""".strip()
+            """
         code = code.format(
             filename=repr(filename),
             has_filename=bool(filename),
@@ -343,7 +345,7 @@
     faulthandler.dump_traceback(all_threads=False)
 
 {func_name}()
-""".strip()
+            """
         code = code.format(
             func_name=func_name,
         )
@@ -393,7 +395,7 @@
 dump()
 waiter.stop.set()
 waiter.join()
-""".strip()
+            """
         code = code.format(filename=repr(filename))
         output, exitcode = self.get_output(code, filename)
         output = '\n'.join(output)
@@ -411,8 +413,8 @@
 Current thread XXX \(most recent call first\):
   File "<string>", line {lineno} in dump
   File "<string>", line 28 in <module>$
-""".strip()
-        regex = regex.format(lineno=lineno)
+            """
+        regex = dedent(regex.format(lineno=lineno)).strip()
         self.assertRegex(output, regex)
         self.assertEqual(exitcode, 0)
 
@@ -455,7 +457,7 @@
 func(timeout, repeat, cancel, file, loops)
 if file is not None:
     file.close()
-""".strip()
+            """
         code = code.format(
             timeout=TIMEOUT,
             repeat=repeat,
@@ -560,7 +562,7 @@
 if file is not None:
     file.close()
 sys.exit(exitcode)
-""".strip()
+            """
         code = code.format(
             filename=repr(filename),
             has_filename=bool(filename),