AttributeError: module 'prisma.fields' has no attribute 'Base64'

[ZainyAct]

Bug description

The Prisma Python Client generates a reference to fields.Base64 in the _builder.py file, but the Base64 type is not defined in the generated fields.py. This causes an AttributeError: module 'prisma.fields' has no attribute 'Base64' during prisma generate.

How to reproduce

Steps to reproduce the behavior:

1. Use the following Prisma schema:

   generator client {
     provider = env("PRISMA_CLIENT_PROVIDER")
   }
   
   datasource db_postgres {
     provider = "postgresql"
     url      = env("DATABASE_URL")
   }
   
   model Example {
     id   Int    @id @default(autoincrement())
     data Bytes
   }
   

Expected behavior

The Prisma Python Client should generate the Base64 type in fields.py or provide proper handling for the Bytes type without generating a broken reference.
Prisma information

generator client {
provider = env("PRISMA_CLIENT_PROVIDER")
}

datasource db_postgres {
provider = "postgresql"
url = env("DATABASE_URL")
}

model Example {
id Int @id @default(autoincrement())
data Bytes
}

Environment & setup

OS: Ubuntu 20.04
Database: PostgreSQL
Python version: 3.10
Prisma version:

Name: prisma
Version: 0.15.0

Name: prisma-client
Version: 0.2.1

[rsonger]

I was getting this same error except it occurred when I ran from prisma import Prisma in a Python program or repl after generating the client one time. Then the error would occur each time I tried to regenerate with prisma generate after that. And the prisma_cleanup module didn't help either because it would give the error
RuntimeError: The given package does not appear to be a Prisma Client Python package.

I was able to fix this by reinstalling prisma and specifying recursive_type_depth = 5 for the generator in my schema.prisma. The warnings about Mypy lead me to try with this set to -1, but that is when I started getting the error about fields.Base64. I could verify that generating with recursive_type_depth = 5 gives a fields.py file containing only the following line instead of the version of fields.py that does not import from ._fields or base64.
from ._fields import *

Here is the generator in my schema.prisma file with the fix:

generator client_python {
  provider             = "prisma-client-py"
  recursive_type_depth = 5
}

[ZainyAct]

So it turns out the issue was with using python "prisma-client-py" as the provider, if I used js "prisma-client-js"everything worked out fine. I know that isn't much of a fix but its better than punching your desk for 3 hours (my hands hurt).