--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/env/lib/python3.7/site-packages/click/exceptions.py	Sat May 02 07:14:21 2020 -0400
@@ -0,0 +1,253 @@
+from ._compat import filename_to_ui
+from ._compat import get_text_stderr
+from ._compat import PY2
+from .utils import echo
+
+
+def _join_param_hints(param_hint):
+    if isinstance(param_hint, (tuple, list)):
+        return " / ".join(repr(x) for x in param_hint)
+    return param_hint
+
+
+class ClickException(Exception):
+    """An exception that Click can handle and show to the user."""
+
+    #: The exit code for this exception
+    exit_code = 1
+
+    def __init__(self, message):
+        ctor_msg = message
+        if PY2:
+            if ctor_msg is not None:
+                ctor_msg = ctor_msg.encode("utf-8")
+        Exception.__init__(self, ctor_msg)
+        self.message = message
+
+    def format_message(self):
+        return self.message
+
+    def __str__(self):
+        return self.message
+
+    if PY2:
+        __unicode__ = __str__
+
+        def __str__(self):
+            return self.message.encode("utf-8")
+
+    def show(self, file=None):
+        if file is None:
+            file = get_text_stderr()
+        echo("Error: {}".format(self.format_message()), file=file)
+
+
+class UsageError(ClickException):
+    """An internal exception that signals a usage error.  This typically
+    aborts any further handling.
+
+    :param message: the error message to display.
+    :param ctx: optionally the context that caused this error.  Click will
+                fill in the context automatically in some situations.
+    """
+
+    exit_code = 2
+
+    def __init__(self, message, ctx=None):
+        ClickException.__init__(self, message)
+        self.ctx = ctx
+        self.cmd = self.ctx.command if self.ctx else None
+
+    def show(self, file=None):
+        if file is None:
+            file = get_text_stderr()
+        color = None
+        hint = ""
+        if self.cmd is not None and self.cmd.get_help_option(self.ctx) is not None:
+            hint = "Try '{} {}' for help.\n".format(
+                self.ctx.command_path, self.ctx.help_option_names[0]
+            )
+        if self.ctx is not None:
+            color = self.ctx.color
+            echo("{}\n{}".format(self.ctx.get_usage(), hint), file=file, color=color)
+        echo("Error: {}".format(self.format_message()), file=file, color=color)
+
+
+class BadParameter(UsageError):
+    """An exception that formats out a standardized error message for a
+    bad parameter.  This is useful when thrown from a callback or type as
+    Click will attach contextual information to it (for instance, which
+    parameter it is).
+
+    .. versionadded:: 2.0
+
+    :param param: the parameter object that caused this error.  This can
+                  be left out, and Click will attach this info itself
+                  if possible.
+    :param param_hint: a string that shows up as parameter name.  This
+                       can be used as alternative to `param` in cases
+                       where custom validation should happen.  If it is
+                       a string it's used as such, if it's a list then
+                       each item is quoted and separated.
+    """
+
+    def __init__(self, message, ctx=None, param=None, param_hint=None):
+        UsageError.__init__(self, message, ctx)
+        self.param = param
+        self.param_hint = param_hint
+
+    def format_message(self):
+        if self.param_hint is not None:
+            param_hint = self.param_hint
+        elif self.param is not None:
+            param_hint = self.param.get_error_hint(self.ctx)
+        else:
+            return "Invalid value: {}".format(self.message)
+        param_hint = _join_param_hints(param_hint)
+
+        return "Invalid value for {}: {}".format(param_hint, self.message)
+
+
+class MissingParameter(BadParameter):
+    """Raised if click required an option or argument but it was not
+    provided when invoking the script.
+
+    .. versionadded:: 4.0
+
+    :param param_type: a string that indicates the type of the parameter.
+                       The default is to inherit the parameter type from
+                       the given `param`.  Valid values are ``'parameter'``,
+                       ``'option'`` or ``'argument'``.
+    """
+
+    def __init__(
+        self, message=None, ctx=None, param=None, param_hint=None, param_type=None
+    ):
+        BadParameter.__init__(self, message, ctx, param, param_hint)
+        self.param_type = param_type
+
+    def format_message(self):
+        if self.param_hint is not None:
+            param_hint = self.param_hint
+        elif self.param is not None:
+            param_hint = self.param.get_error_hint(self.ctx)
+        else:
+            param_hint = None
+        param_hint = _join_param_hints(param_hint)
+
+        param_type = self.param_type
+        if param_type is None and self.param is not None:
+            param_type = self.param.param_type_name
+
+        msg = self.message
+        if self.param is not None:
+            msg_extra = self.param.type.get_missing_message(self.param)
+            if msg_extra:
+                if msg:
+                    msg += ".  {}".format(msg_extra)
+                else:
+                    msg = msg_extra
+
+        return "Missing {}{}{}{}".format(
+            param_type,
+            " {}".format(param_hint) if param_hint else "",
+            ".  " if msg else ".",
+            msg or "",
+        )
+
+    def __str__(self):
+        if self.message is None:
+            param_name = self.param.name if self.param else None
+            return "missing parameter: {}".format(param_name)
+        else:
+            return self.message
+
+    if PY2:
+        __unicode__ = __str__
+
+        def __str__(self):
+            return self.__unicode__().encode("utf-8")
+
+
+class NoSuchOption(UsageError):
+    """Raised if click attempted to handle an option that does not
+    exist.
+
+    .. versionadded:: 4.0
+    """
+
+    def __init__(self, option_name, message=None, possibilities=None, ctx=None):
+        if message is None:
+            message = "no such option: {}".format(option_name)
+        UsageError.__init__(self, message, ctx)
+        self.option_name = option_name
+        self.possibilities = possibilities
+
+    def format_message(self):
+        bits = [self.message]
+        if self.possibilities:
+            if len(self.possibilities) == 1:
+                bits.append("Did you mean {}?".format(self.possibilities[0]))
+            else:
+                possibilities = sorted(self.possibilities)
+                bits.append("(Possible options: {})".format(", ".join(possibilities)))
+        return "  ".join(bits)
+
+
+class BadOptionUsage(UsageError):
+    """Raised if an option is generally supplied but the use of the option
+    was incorrect.  This is for instance raised if the number of arguments
+    for an option is not correct.
+
+    .. versionadded:: 4.0
+
+    :param option_name: the name of the option being used incorrectly.
+    """
+
+    def __init__(self, option_name, message, ctx=None):
+        UsageError.__init__(self, message, ctx)
+        self.option_name = option_name
+
+
+class BadArgumentUsage(UsageError):
+    """Raised if an argument is generally supplied but the use of the argument
+    was incorrect.  This is for instance raised if the number of values
+    for an argument is not correct.
+
+    .. versionadded:: 6.0
+    """
+
+    def __init__(self, message, ctx=None):
+        UsageError.__init__(self, message, ctx)
+
+
+class FileError(ClickException):
+    """Raised if a file cannot be opened."""
+
+    def __init__(self, filename, hint=None):
+        ui_filename = filename_to_ui(filename)
+        if hint is None:
+            hint = "unknown error"
+        ClickException.__init__(self, hint)
+        self.ui_filename = ui_filename
+        self.filename = filename
+
+    def format_message(self):
+        return "Could not open file {}: {}".format(self.ui_filename, self.message)
+
+
+class Abort(RuntimeError):
+    """An internal signalling exception that signals Click to abort."""
+
+
+class Exit(RuntimeError):
+    """An exception that indicates that the application should exit with some
+    status code.
+
+    :param code: the status code to exit with.
+    """
+
+    __slots__ = ("exit_code",)
+
+    def __init__(self, code=0):
+        self.exit_code = code