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PyCon US 2025

Pamela Fox (31)

Look at the amazing earrings I won at the PyLadies Auction!
1,674 glass beads arranged to represent a Python program.
Should I wear them to my poster session for everyone to check out?

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Yes, I will find any excuse to wear my llama ears at .

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"Flask is a chill framework"

- Diane Phan @

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Want to geek out on vector embeddings?
Come check out my poster at , from 10am-1pm today!

Spoilers: Here's the digital version for anyone not here:
tinyurl.com/visual-vectors-pos

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Learnt a ton from @crazy4pi314 in their "Snakes in a Grid" tutorial at about how we can use Python to work with Excel spreadsheets:

* Use pandas read_excel() to turn an XLSX into a dataframe, and to_excel() to turn a dataframe to an XLSX
github.com/crazy4pi314/snakes-

* Use openpyxl to create a spreadsheet from scratch, complete with working formulas and charts!
github.com/crazy4pi314/snakes-

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Learnt about t-strings from @davepeck and @pauleveritt at -
the formatting is the exact same as f-strings, but the return type is a Template object with a mix of strings and interpolated values.

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I stopped by @pydantic AI booth to say hi, and it turned into a debugging session with @samuelcolvin to figure out when/why SLMs fail to handle agentic function calling flows. Determined that SLMs like llama3.1:8b can handle a single tool call, but they don't handle a multi-turn conversation with previous tool call responses very well. Reliability drops drastically.

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Finally got to play with the =PY() formula in Excel, thanks to the tutorial from @crazy4pi314

Learnt how to render data frames, explode numpy matrices, and calculate Tetris scores (a problem from the annual Excel competition, which apparently is a thing...)

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