Challenge
Undo and history
Extend the working cargo console: record every change to the hold in a history list and show it with a history command, then add undo, which takes the last change off the history and reverses it.
Results for “records”
Showing 11–20 of 22
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Example
Dynamic Typing
Python allows changing variable type during program execution. This is dynamic typing.
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Challenge
Mass by category
…67.0 kg crew: 3.4 kg Start with totals = {} . For each record, totals.get(category, 0) gives the total so far, or 0 for a category not seen yet; add the record's mass and store it back under the…
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Article Mini projects
Medical dispenser - Don’t trust the user
…dose in {wait_seconds // 3600:.1f} hours" # Dispense and record self.dose_times.append(current_monotonic) return "DISPENSED: Medication delivered safely" # Grace tries his trick: dispenser =…
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Example
Modifying Dictionaries
Adding, changing and removing dictionary elements in Python.
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Quiz
Python *args and **kwargs Quiz
…functions need to take any number of values: a log that records every reading, a launch that accepts optional settings, a helper that passes everything on to another function. In Python, *args…
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Challenge
Manifest line
…each value, in order. A new field The manifest now also records the module each item is stowed in. The starter code stops with ValueError: too many values to unpack , because the tuple has four values…
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Challenge
Search the log
The mission log records thousands of lines a day, and the flight director only wants to see the errors. Before the log viewer can highlight them, it has to know whether a line contains ERROR , and…
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Example
Nested Dictionaries
Dictionaries can contain other dictionaries. Useful for complex data structures.
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Example
Creating Dictionaries
Dictionaries store data as key-value pairs. Fast access to data by key.
