Challenge
Undo and history
…and record every change that actually happens as (action, item, mass) : ("add", "CG-0042", 18.5) or ("remove", "CG-0042", 18.5) . Refused commands change nothing, so they aren't recorded. Add a…
Results for “items”
Showing 31–40 of 56
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Challenge
Copy-pasted blocks
…the same, then add a fourth tank with a single list item and list the low tanks.
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Challenge
Names with values
Print each sensor name with its reading by looping over two lists together with zip(), then add a third list of units and warn when the lists don't have the same length, since zip() quietly stops at…
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Challenge
Missing index
readings[5] on a list of five readings stops with an IndexError. Predict it, work out the valid indexes with len(), fix it with [-1], then print the first, middle and last readings for any length.
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Example
Set Operations
Adding and removing elements from a set. Basic set operations.
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Quiz
Python Sets Quiz
A set keeps each item only once and in no particular order: the moons a probe has already photographed, the tools a rover carries, the planets two missions have visited. That makes sets the quickest…
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Quiz
Python Lists Quiz
…the front and the back, slicing, len() and in Changing items, append() , insert() and extend() Removing items with pop() and remove() sort() vs sorted() , min() , max() and sum() Copying a list, and…
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Example
For Loop Basics
For loop iterates through sequence elements. Basic iteration over lists.
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Challenge
Airlock permissions
…missing eva_certified needed <= granted is True when every item of needed is in granted . needed - granted is what's missing. Every action The control panel shows every airlock action at once. ACTIONS…
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Quiz
Python Tuples Quiz
…a tuple is made, you cannot add, remove or replace its items. This free quiz has 15 short questions on creating, reading and unpacking tuples in Python, on what you can and cannot do with them, and on…