black all the things. (#1049)

* added black to develop guide

* no need for pep8radius.

* changelog.

* Add pre-commit checkbox.

* Add pre-commit to dev reqs.

* Add pyproject.toml for black.

* Pre-commit config.

* Add black to travis and dev reqs.

* Install and run black in travis.

* Remove black from dev reqs.

* Lower black target version.

* Re-format with black.

1 files changed, 15 insertions, 15 deletions

diff --git a/tests/features/steps/wrappers.py b/tests/features/steps/wrappers.py
index 23f9cc2b..9a2db982 100644
--- a/tests/features/steps/wrappers.py
+++ b/tests/features/steps/wrappers.py
@@ -20,10 +20,10 @@ def expect_exact(context, expected, timeout):
         timedout = True
     if timedout:
         # Strip color codes out of the output.
-        actual = re.sub(r'\x1b\[([0-9A-Za-z;?])+[m|K]?',
-                        '', context.cli.before)
+        actual = re.sub(r"\x1b\[([0-9A-Za-z;?])+[m|K]?", "", context.cli.before)
         raise Exception(
-            textwrap.dedent('''\
+            textwrap.dedent(
+                """\
                 Expected:
                 ---
                 {0!r}
@@ -36,35 +36,35 @@ def expect_exact(context, expected, timeout):
                 ---
                 {2!r}
                 ---
-            ''').format(
-                expected,
-                actual,
-                context.logfile.getvalue()
-            )
+            """
+            ).format(expected, actual, context.logfile.getvalue())
         )
 
 
 def expect_pager(context, expected, timeout):
-    expect_exact(context, "{0}\r\n{1}{0}\r\n".format(
-        context.conf['pager_boundary'], expected), timeout=timeout)
+    expect_exact(
+        context,
+        "{0}\r\n{1}{0}\r\n".format(context.conf["pager_boundary"], expected),
+        timeout=timeout,
+    )
 
 
 def run_cli(context, run_args=None, prompt_check=True, currentdb=None):
     """Run the process using pexpect."""
     run_args = run_args or []
-    cli_cmd = context.conf.get('cli_command')
+    cli_cmd = context.conf.get("cli_command")
     cmd_parts = [cli_cmd] + run_args
-    cmd = ' '.join(cmd_parts)
+    cmd = " ".join(cmd_parts)
     context.cli = pexpect.spawnu(cmd, cwd=context.package_root)
     context.logfile = StringIO()
     context.cli.logfile = context.logfile
     context.exit_sent = False
-    context.currentdb = currentdb or context.conf['dbname']
-    context.cli.sendline('\pset pager always')
+    context.currentdb = currentdb or context.conf["dbname"]
+    context.cli.sendline("\pset pager always")
     if prompt_check:
         wait_prompt(context)
 
 
 def wait_prompt(context):
     """Make sure prompt is displayed."""
-    expect_exact(context, '{0}> '.format(context.conf['dbname']), timeout=5)
+    expect_exact(context, "{0}> ".format(context.conf["dbname"]), timeout=5)