Fix PEP8 line length in tests.

Author: Liam3851

pandas/tests/test_strings.py

@@ -541,12 +541,15 @@ def test_replace_literal(self):
         result = values.str.replace('f.', 'ba', regex=False)
         tm.assert_series_equal(result, exp)
 
-        # Cannot do a literal replace if given a callable repl or compiled pattern
+        # Cannot do a literal replace if given a callable repl or compiled
+        # pattern
         callable_repl = lambda m: m.group(0).swapcase()
         compiled_pat = re.compile('[a-z][A-Z]{2}')
 
-        pytest.raises(ValueError, values.str.replace, 'abc', callable_repl, regex=False)
-        pytest.raises(ValueError, values.str.replace, compiled_pat, '', regex=False)
+        pytest.raises(ValueError, values.str.replace, 'abc', callable_repl,
+                      regex=False)
+        pytest.raises(ValueError, values.str.replace, compiled_pat, '',
+                      regex=False)
 
     def test_repeat(self):
         values = Series(['a', 'b', NA, 'c', NA, 'd'])