diff --git a/test/py/conftest.py b/test/py/conftest.py
index 5c19af1d50..bffee6b8a3 100644
--- a/test/py/conftest.py
+++ b/test/py/conftest.py
@@ -13,17 +13,16 @@
 # - Implementing custom pytest markers.
 
 import atexit
+import configparser
 import errno
+import io
 import os
 import os.path
 import pytest
-from _pytest.runner import runtestprotocol
 import re
-import io
+from _pytest.runner import runtestprotocol
 import sys
 
-import configparser
-
 # Globals: The HTML log file, and the connection to the U-Boot console.
 log = None
 console = None
@@ -168,7 +167,7 @@ def pytest_configure(config):
             ini_str = '[root]\n' + f.read()
             ini_sio = io.StringIO(ini_str)
             parser = configparser.RawConfigParser()
-            parser.readfp(ini_sio)
+            parser.read_file(ini_sio)
             ubconfig.buildconfig.update(parser.items('root'))
 
     ubconfig.test_py_dir = test_py_dir
diff --git a/test/py/multiplexed_log.py b/test/py/multiplexed_log.py
index de0aacc659..545a774302 100644
--- a/test/py/multiplexed_log.py
+++ b/test/py/multiplexed_log.py
@@ -51,7 +51,7 @@ class LogfileStream(object):
         """Write data to the log stream.
 
         Args:
-            data: The data to write tot he file.
+            data: The data to write to the file.
             implicit: Boolean indicating whether data actually appeared in the
                 stream, or was implicitly generated. A valid use-case is to
                 repeat a shell prompt at the start of each separate log
@@ -64,7 +64,8 @@ class LogfileStream(object):
 
         self.logfile.write(self, data, implicit)
         if self.chained_file:
-            self.chained_file.write(data)
+            # Chained file is console, convert things a little
+            self.chained_file.write((data.encode('ascii', 'replace')).decode())
 
     def flush(self):
         """Flush the log stream, to ensure correct log interleaving.
@@ -136,6 +137,10 @@ class RunAndLog(object):
             p = subprocess.Popen(cmd, cwd=cwd,
                 stdin=None, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
             (stdout, stderr) = p.communicate()
+            if stdout is not None:
+                stdout = stdout.decode('utf-8')
+            if stderr is not None:
+                stderr = stderr.decode('utf-8')
             output = ''
             if stdout:
                 if stderr:
@@ -215,7 +220,7 @@ class Logfile(object):
             Nothing.
         """
 
-        self.f = open(fn, 'wt')
+        self.f = open(fn, 'wt', encoding='utf-8')
         self.last_stream = None
         self.blocks = []
         self.cur_evt = 1
diff --git a/test/py/pytest.ini b/test/py/pytest.ini
index 7e400682bf..e93d010f1f 100644
--- a/test/py/pytest.ini
+++ b/test/py/pytest.ini
@@ -8,3 +8,6 @@
 markers =
     boardspec: U-Boot: Describes the set of boards a test can/can't run on.
     buildconfigspec: U-Boot: Describes Kconfig/config-header constraints.
+    notbuildconfigspec: U-Boot: Describes required disabled Kconfig options.
+    requiredtool: U-Boot: Required host tools for a test.
+    slow: U-Boot: Specific test will run slowly.
diff --git a/test/py/tests/test_fit.py b/test/py/tests/test_fit.py
index 4922b9dcc6..356d9a20f2 100755
--- a/test/py/tests/test_fit.py
+++ b/test/py/tests/test_fit.py
@@ -153,7 +153,7 @@ def test_fit(u_boot_console):
         src = make_fname('u-boot.dts')
         dtb = make_fname('u-boot.dtb')
         with open(src, 'w') as fd:
-            print(base_fdt, file=fd)
+            fd.write(base_fdt)
         util.run_and_log(cons, ['dtc', src, '-O', 'dtb', '-o', dtb])
         return dtb
 
@@ -186,7 +186,7 @@ def test_fit(u_boot_console):
         its = make_its(params)
         util.run_and_log(cons, [mkimage, '-f', its, fit])
         with open(make_fname('u-boot.dts'), 'w') as fd:
-            print(base_fdt, file=fd)
+            fd.write(base_fdt)
         return fit
 
     def make_kernel(filename, text):
diff --git a/test/py/u_boot_spawn.py b/test/py/u_boot_spawn.py
index b011a3e3da..4f898cdefe 100644
--- a/test/py/u_boot_spawn.py
+++ b/test/py/u_boot_spawn.py
@@ -113,7 +113,7 @@ class Spawn(object):
             Nothing.
         """
 
-        os.write(self.fd, data)
+        os.write(self.fd, data.encode(errors='replace'))
 
     def expect(self, patterns):
         """Wait for the sub-process to emit specific data.
@@ -171,7 +171,7 @@ class Spawn(object):
                 events = self.poll.poll(poll_maxwait)
                 if not events:
                     raise Timeout()
-                c = os.read(self.fd, 1024)
+                c = os.read(self.fd, 1024).decode(errors='replace')
                 if not c:
                     raise EOFError()
                 if self.logfile_read: