Explore Code Generation Using DeepSeek Coder Models

Last reviewed: about 1 year ago

A handy way to explore all of the models available on Workers AI is to use a Jupyter Notebook ↗.

You can download the DeepSeek Coder notebook or view the embedded notebook below.

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Exploring Code Generation Using DeepSeek Coder

AI Models being able to generate code unlocks all sorts of use cases. The DeepSeek Coder ↗ models @hf/thebloke/deepseek-coder-6.7b-base-awq and @hf/thebloke/deepseek-coder-6.7b-instruct-awq are now available on Workers AI.

Let's explore them using the API!

import sys
!{sys.executable} -m pip install requests python-dotenv

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import os
from getpass import getpass

from IPython.display import display, Image, Markdown, Audio

import requests

%load_ext dotenv
%dotenv

Configuring your environment

To use the API you'll need your Cloudflare Account ID ↗ (head to Workers & Pages > Overview > Account details > Account ID) and a Workers AI enabled API Token ↗.

If you want to add these files to your environment, you can create a new file named .env

CLOUDFLARE_API_TOKEN="YOUR-TOKEN"
CLOUDFLARE_ACCOUNT_ID="YOUR-ACCOUNT-ID"

if "CLOUDFLARE_API_TOKEN" in os.environ:
    api_token = os.environ["CLOUDFLARE_API_TOKEN"]
else:
    api_token = getpass("Enter you Cloudflare API Token")

if "CLOUDFLARE_ACCOUNT_ID" in os.environ:
    account_id = os.environ["CLOUDFLARE_ACCOUNT_ID"]
else:
    account_id = getpass("Enter your account id")

Generate code from a comment

A common use case is to complete the code for the user after they provide a descriptive comment.

model = "@hf/thebloke/deepseek-coder-6.7b-base-awq"

prompt = "# A function that checks if a given word is a palindrome"

response = requests.post(
    f"https://api.cloudflare.com/client/v4/accounts/{account_id}/ai/run/{model}",
    headers={"Authorization": f"Bearer {api_token}"},
    json={"messages": [
        {"role": "user", "content": prompt}
    ]}
)
inference = response.json()
code = inference["result"]["response"]

display(Markdown(f"""
    ```python
    {prompt}
    {code.strip()}
    ```
"""))

# A function that checks if a given word is a palindrome
def is_palindrome(word):
    # Convert the word to lowercase
    word = word.lower()

    # Reverse the word
    reversed_word = word[::-1]

    # Check if the reversed word is the same as the original word
    if word == reversed_word:
        return True
    else:
        return False

# Test the function
print(is_palindrome("racecar"))  # Output: True
print(is_palindrome("hello"))    # Output: False

Assist in debugging

We've all been there, bugs happen. Sometimes those stacktraces can be very intimidating, and a great use case of using Code Generation is to assist in explaining the problem.

model = "@hf/thebloke/deepseek-coder-6.7b-instruct-awq"

system_message = "The user is going to give you code that isn't working. Explain to the user what might be wrong"

code = """# Welcomes our user
def hello_world(first_name="World"):
    print(f"Hello, {name}!")
"""

response = requests.post(
    f"https://api.cloudflare.com/client/v4/accounts/{account_id}/ai/run/{model}",
    headers={"Authorization": f"Bearer {api_token}"},
    json={"messages": [
        {"role": "system", "content": system_message},
        {"role": "user", "content": code},
    ]}
)
inference = response.json()
response = inference["result"]["response"]
display(Markdown(response))

The error in your code is that you are trying to use a variable name which is not defined anywhere in your function. The correct variable to use is first_name. So, you should change f"Hello, {name}!" to f"Hello, {first_name}!".

Here is the corrected code:

# Welcomes our user
def hello_world(first_name="World"):
    print(f"Hello, {first_name}")

Now, when you call hello_world(), it will print "Hello, World" by default. If you call hello_world("John"), it will print "Hello, John".

Write tests!

Writing unit tests is a common best practice. With the enough context, it's possible to write unit tests.

model = "@hf/thebloke/deepseek-coder-6.7b-instruct-awq"

system_message = "The user is going to give you code and would like to have tests written in the Python unittest module."

code = """
class User:

    def __init__(self, first_name, last_name=None):
        self.first_name = first_name
        self.last_name = last_name
        if last_name is None:
            self.last_name = "Mc" + self.first_name

    def full_name(self):
        return self.first_name + " " + self.last_name
"""

response = requests.post(
    f"https://api.cloudflare.com/client/v4/accounts/{account_id}/ai/run/{model}",
    headers={"Authorization": f"Bearer {api_token}"},
    json={"messages": [
        {"role": "system", "content": system_message},
        {"role": "user", "content": code},
    ]}
)
inference = response.json()
response = inference["result"]["response"]
display(Markdown(response))

Here is a simple unittest test case for the User class:

import unittest

class TestUser(unittest.TestCase):

    def test_full_name(self):
        user = User("John", "Doe")
        self.assertEqual(user.full_name(), "John Doe")

    def test_default_last_name(self):
        user = User("Jane")
        self.assertEqual(user.full_name(), "Jane McJane")

if __name__ == '__main__':
    unittest.main()

In this test case, we have two tests:

test_full_name tests the full_name method when the user has both a first name and a last name.
test_default_last_name tests the full_name method when the user only has a first name and the last name is set to "Mc" + first name.

If all these tests pass, it means that the full_name method is working as expected. If any of these tests fail, it

Fill-in-the-middle Code Completion

A common use case in Developer Tools is to autocomplete based on context. DeepSeek Coder provides the ability to submit existing code with a placeholder, so that the model can complete in context.

Warning: The tokens are prefixed with <｜ and suffixed with ｜> make sure to copy and paste them.

model = "@hf/thebloke/deepseek-coder-6.7b-base-awq"

code = """
<｜fim▁begin｜>import re

from jklol import email_service

def send_email(email_address, body):
    <｜fim▁hole｜>
    if not is_valid_email:
        raise InvalidEmailAddress(email_address)
    return email_service.send(email_address, body)<｜fim▁end｜>
"""

response = requests.post(
    f"https://api.cloudflare.com/client/v4/accounts/{account_id}/ai/run/{model}",
    headers={"Authorization": f"Bearer {api_token}"},
    json={"messages": [
        {"role": "user", "content": code}
    ]}
)
inference = response.json()
response = inference["result"]["response"]
display(Markdown(f"""
    ```python
    {response.strip()}
    ```
"""))

is_valid_email = re.match(r"[^@]+@[^@]+\.[^@]+", email_address)

Experimental: Extract data into JSON

No need to threaten the model or bring grandma into the prompt. Get back JSON in the format you want.

model = "@hf/thebloke/deepseek-coder-6.7b-instruct-awq"

# Learn more at https://json-schema.org/
json_schema = """
{
  "title": "User",
  "description": "A user from our example app",
  "type": "object",
  "properties": {
    "firstName": {
      "description": "The user's first name",
      "type": "string"
    },
    "lastName": {
      "description": "The user's last name",
      "type": "string"
    },
    "numKids": {
      "description": "Amount of children the user has currently",
      "type": "integer"
    },
    "interests": {
      "description": "A list of what the user has shown interest in",
      "type": "array",
      "items": {
        "type": "string"
      }
    },
  },
  "required": [ "firstName" ]
}
"""

system_prompt = f"""
The user is going to discuss themselves and you should create a JSON object from their description to match the json schema below.

<BEGIN JSON SCHEMA>
{json_schema}
<END JSON SCHEMA>

Return JSON only. Do not explain or provide usage examples.
"""

prompt = """Hey there, I'm Craig Dennis and I'm a Developer Educator at Cloudflare. My email is craig@cloudflare.com.
            I am very interested in AI. I've got two kids. I love tacos, burritos, and all things Cloudflare"""

response = requests.post(
    f"https://api.cloudflare.com/client/v4/accounts/{account_id}/ai/run/{model}",
    headers={"Authorization": f"Bearer {api_token}"},
    json={"messages": [
        {"role": "system", "content": system_prompt},
        {"role": "user", "content": prompt}
    ]}
)
inference = response.json()
response = inference["result"]["response"]
display(Markdown(f"""
    ```json
    {response.strip()}
    ```
"""))

{
  "firstName": "Craig",
  "lastName": "Dennis",
  "numKids": 2,
  "interests": ["AI", "Cloudflare", "Tacos", "Burritos"]
}

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