cleanup of the output

This commit is contained in:
Dmitry Kisselev
2025-10-17 07:06:23 -07:00
parent 9a692289e4
commit 352498981c

View File

@@ -13,7 +13,7 @@
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@@ -28,7 +28,7 @@
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@@ -42,18 +42,10 @@
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"text": [
"API key looks good so far\n"
]
}
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"source": [
"# set up environment\n",
"\n",
@@ -71,7 +63,7 @@
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@@ -86,7 +78,7 @@
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@@ -104,7 +96,7 @@
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@@ -117,55 +109,10 @@
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"text/markdown": [
"Certainly! Let's break down the code you've provided:\n",
"\n",
"### Code Explanation\n",
"\n",
"```python\n",
"yield from {book.get(\"author\") for book in books if book.get(\"author\")}\n",
"```\n",
"\n",
"#### Components of the Code:\n",
"\n",
"1. **Set Comprehension**:\n",
" - `{book.get(\"author\") for book in books if book.get(\"author\")}`: This part of the code is a **set comprehension**. It creates a set of authors by iterating through a collection called `books`.\n",
" - `book.get(\"author\")`: This method retrieves the value associated with the key `\"author\"` from each `book` dictionary. If the specified key does not exist, `None` is returned.\n",
" - `if book.get(\"author\")`: This condition filters out any authors that are `None` or any falsy value, ensuring that only valid authors are included in the set.\n",
"\n",
"2. **Yielding Values**:\n",
" - `yield from`: This keyword is used in Python to yield values from a generator or an iterable. In this context, it takes the set created from the set comprehension and yields each author one at a time.\n",
"\n",
"### What the Code Does\n",
"\n",
"- The code iterates over a collection of `books`, each of which is expected to be a dictionary. For each book, it checks if the `\"author\"` key exists and has a valid value (not `None` or falsy).\n",
"- It collects all unique authors into a set to ensure no duplicates are included. The use of a set here also makes looking up authors efficient.\n",
"- Finally, it yields each author one at a time, allowing the consuming code to process each author individually.\n",
"\n",
"### Why Use This Code?\n",
"\n",
"- **Unique Values**: Using a set guarantees that each author is only yielded once, even if multiple books have the same author.\n",
"- **Memory Efficiency**: Using `yield from` allows handling potentially large collections of authors efficiently without having to store them all in memory at once.\n",
"- **Ease of Use**: This pattern is useful for generating a stream of results where the number of authors is not known in advance, and the consumer can process each author as it arrives.\n",
"\n",
"### Summary\n",
"\n",
"This code is effective for extracting unique authors from a list of book dictionaries, yielding each author for further processing without duplicates and in an efficient manner."
],
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"source": [
"# Get gpt-4o-mini to answer, with streaming\n",
"\n",
@@ -177,62 +124,10 @@
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"text/markdown": [
"**Understanding Recursive Yield**\n",
"\n",
"```python\n",
"yield from {book.get(\"author\") for book in books if book.get(\"author\")}\n",
"```\n",
"is a piece of Python code that utilizes the `yield from` syntax to delegate iterations over a sub-generators. This allows us to generate an iterable sequence one step at a time, avoiding memory overhead.\n",
"\n",
"### Breakdown\n",
"\n",
"* `{book.get(\"author\") for book in books if book.get(\"author\")}` is a generator expression:\n",
" * It defines a small, anonymous function (lambda-like) that takes `books` as input.\n",
" * For each item `book` in `books`, it calls another function (`get`) to retrieve the `\"author\"` attribute from an object.\n",
" * The resulting values are generated on-the-fly and sent through the generator expression.\n",
"* `yield from …`: The outer expression uses `yield from` to delegate control over iterations to the inner nested generator.\n",
" * Instead of dealing with each iterable individually, `yield from` sends its arguments down into the first argument, which it executes and yields values on.\n",
"\n",
"**Equivalent Code**\n",
"\n",
"Here is an equivalent version of this code using traditional loops:\n",
"\n",
"```python\n",
"def book_authors(books):\n",
" authors = []\n",
" for book in books:\n",
" if \"author\" in book:\n",
" author_name = book[\"author\"]\n",
" yield from (author_name,)\n",
" authors.append(author_name)\n",
"\n",
"# To use this function with our recursive yield version \n",
"# you can use it like so\n",
"for author_name in book_authors(books):\n",
" # Use this here\n",
"```\n",
"\n",
"### Why is Yield From useful?\n",
"\n",
"In programming languages that natively don't support nested generator iterations (like CPython), using `yield from` allows for elegant implementation of cooperative multitasking. It also simplifies the logic of writing generators.\n",
"\n",
"Note: However, all such recursive-yield constructions rely on Pythons behavior towards generator expressions in its specific use-case."
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"source": [
"# Get Llama 3.2 to answer\n",
"\n",