Just use six.string_types for string compatibility

Author: jonmmease

_plotly_utils/basevalidators.py

@@ -12,8 +12,7 @@
 # Optional imports
 # ----------------
 import sys
-
-from _plotly_utils.compat import str_types
+from six import string_types
 
 np = None
 pd = None
@@ -350,7 +349,7 @@ def __init__(self,
         # ----------------------------
         # Look for regular expressions
         for v in self.values:
-            if v and isinstance(v, str_types) and v[0] == '/' and v[-1] == '/':
+            if v and isinstance(v, string_types) and v[0] == '/' and v[-1] == '/':
                 # String is a regex with leading and trailing '/' character
                 regex_str = v[1:-1]
                 self.val_regexs.append(re.compile(regex_str))
@@ -388,7 +387,7 @@ def perform_replacemenet(self, v):
         """
         Return v with any applicable regex replacements applied
         """
-        if isinstance(v, str_types):
+        if isinstance(v, string_types):
             for repl_args in self.regex_replacements:
                 if repl_args:
                     v = re.sub(repl_args[0], repl_args[1], v)
@@ -443,7 +442,7 @@ def in_values(self, e):
         """
         Return whether a value matches one of the enumeration options
         """
-        is_str = isinstance(e, str_types)
+        is_str = isinstance(e, string_types)
         for v, regex in zip(self.values, self.val_regexs):
             if is_str and regex:
                 in_values = fullmatch(regex, e) is not None
@@ -822,7 +821,7 @@ def validate_coerce(self, v):
 
             # If strict, make sure all elements are strings.
             if self.strict:
-                invalid_els = [e for e in v if not isinstance(e, str_types)]
+                invalid_els = [e for e in v if not isinstance(e, string_types)]
                 if invalid_els:
                     self.raise_invalid_elements(invalid_els)
 
@@ -863,10 +862,10 @@ def validate_coerce(self, v):
 
         else:
             if self.strict:
-                if not isinstance(v, str_types):
+                if not isinstance(v, string_types):
                     self.raise_invalid_val(v)
             else:
-                if not isinstance(v, str_types + (int, float)):
+                if not isinstance(v, string_types + (int, float)):
                     self.raise_invalid_val(v)
 
                 # Convert value to a string
@@ -1082,7 +1081,7 @@ def perform_validate_coerce(v, allow_number=None):
         if isinstance(v, numbers.Number) and allow_number:
             # If allow_numbers then any number is ok
             return v
-        elif not isinstance(v, str_types):
+        elif not isinstance(v, string_types):
             # If not allow_numbers then value must be a string
             return None
         else:
@@ -1204,7 +1203,7 @@ def validate_coerce(self, v):
             pass
         if v is None:
             v_valid = True
-        elif isinstance(v, str_types):
+        elif isinstance(v, string_types):
             v_match = [
                 el for el in ColorscaleValidator.named_colorscales
                 if el.lower() == v.lower()
@@ -1219,7 +1218,7 @@ def validate_coerce(self, v):
                     len(e) != 2 or
                     not isinstance(e[0], numbers.Number) or
                     not (0 <= e[0] <= 1) or
-                    not isinstance(e[1], str_types) or
+                    not isinstance(e[1], string_types) or
                     ColorValidator.perform_validate_coerce(e[1]) is None)]
 
             if len(invalid_els) == 0:
@@ -1338,7 +1337,7 @@ def description(self):
     def validate_coerce(self, v):
         if v is None:
             pass
-        elif not isinstance(v, str_types):
+        elif not isinstance(v, string_types):
             self.raise_invalid_val(v)
         else:
             # match = re.fullmatch(self.regex, v)
@@ -1420,7 +1419,7 @@ def description(self):
         return desc
 
     def vc_scalar(self, v):
-        if not isinstance(v, str_types):
+        if not isinstance(v, string_types):
             return None
 
         # To be generous we accept flags separated on plus ('+'),
@@ -1661,7 +1660,7 @@ def description(self):
     def validate_coerce(self, v):
         if v is None:
             pass
-        elif isinstance(v, str_types):
+        elif isinstance(v, string_types):
             # Future possibilities:
             #   - Detect filesystem system paths and convert to URI
             #   - Validate either url or data uri