Multiple syntax issues with latest generator release 0.44.0

[parthea]

There are various PRs opened by owl-bot that are failing for various syntax issues which we believe to be a result of the generator update. I'm going to use this issue to compile a list of the issues that I'm seeing.

For example,
python-area120-tables . See googleapis/python-area120-tables#36
The error is :

2021-04-27T03:52:51.581184531ZStep #5: error: cannot format /workspace/python-area120-tables/google/area120/tables_v1alpha1/types/tables.py: Cannot parse: 637:8: message=struct.Value,

There is a syntax error where there is a comma missing in the arguments for proto.MapField
See here.

class Row(proto.Message):
    r"""A single row in a table.
    Attributes:
        name (str):
            The resource name of the row. Row names have the form
            ``tables/{table}/rows/{row}``. The name is ignored when
            creating a row.
        values (Sequence[google.area120.tables_v1alpha1.types.Row.ValuesEntry]):
            The values of the row. This is a map of
            column key to value. Key is user entered
            name(default) or the internal column id based on
            the view in the request.
    """

    name = proto.Field(
        proto.STRING,
        number=1,
    )
    values = (
        proto.STRING,
        proto.MESSAGE,
        number=2 <---- comma missing here.
        message=struct.Value,
    )

The current client doesn't have a syntax error. See here.

[parthea]

python-billing . See googleapis/python-billing#63
The error is

Info
2021-04-27T03:52:07.360775961ZStep #5: error: cannot format /workspace/python-billing/google/cloud/billing_v1/services/cloud_billing/client.py: unindent does not match any outer indentation level (<tokenize>, line 1034)

See
https://github.com/googleapis/python-billing/blob/c4f9cd09da1f3043185093f8bd7d5d8e3a51e1f3/owl-bot-staging/v1/google/cloud/billing_v1/services/cloud_billing/client.py#L1034

         if isinstance(request, dict): <-- this line has a syntax error. There is an extra space in front of the if statement.
            # The request isn't a proto-plus wrapped type,
            # so it must be constructed via keyword expansion.
            request = iam_policy.GetIamPolicyRequest(**request)
        elif not request:
            # Null request, just make one.
            request = iam_policy.GetIamPolicyRequest()
             if resource is not None:
                request.resource = resource

[parthea]

python-bigquery-connection . See googleapis/python-bigquery-connection#63
The error is

2021-04-27T03:52:49.693371925ZStep #5: error: cannot format /workspace/python-bigquery-connection/google/cloud/bigquery_connection_v1/services/connection_service/client.py: unindent does not match any outer indentation level (<tokenize>, line 853)

See https://github.com/googleapis/python-bigquery-connection/blob/aed7cf2d0797c86b1eec45aab638fc422d03a1dc/owl-bot-staging/v1/google/cloud/bigquery_connection_v1/services/connection_service/client.py#L853
This looks to be the same issue as python-billing where there is an extra space in front of the if statement.

         if isinstance(request, dict):<-- this line has a syntax error. There is an extra space in front of the if statement.
            # The request isn't a proto-plus wrapped type,
            # so it must be constructed via keyword expansion.
            request = iam_policy.GetIamPolicyRequest(**request)
        elif not request:
            # Null request, just make one.
            request = iam_policy.GetIamPolicyRequest()
             if resource is not None:
                request.resource = resource