Example
Variable Number of Arguments *args
Operator * allows accepting any number of positional arguments.
Results for “print function”
Showing 41–50 of 79
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Example
Default Parameter Values
Parameters can have default values. Used when argument is not provided.
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Challenge
Log to a file
…with with open(), one per line, read the file back and print it, then add an append_entry() function that adds lines at the end without wiping what is there.
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Challenge
Prove the fix
…it stays fixed? Six months from now someone will tidy the function, and log=[] looks so much simpler than the None check. Write the test that proves the fix: it has to pass now and fail on the old…
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Quiz
Python For Loop Quiz
…you can predict how many times a loop runs and what it prints. What the quiz covers Looping over lists and strings range() with a start, a stop and a step, including countdowns Adding up and counting…
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Challenge
Test the parser
Write assert checks for parse_line() from "Parser function": the whole record for a good line first, then None for a blank line, a comment and a line with a missing field, so a broken parser can't…
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Article Mini projects
Calculating Escape Velocity in Python
…Instead of Regular Python? While Python's built-in math functions work fine for simple calculations, NumPy offers several advantages for scientific computing: More efficient for large-scale…
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Challenge
Environment check
…Ask Python for it with the platform and sys modules and print it the way python --version does.
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Challenge
Swapped arguments
…Don't run the code yet. Read it and decide what it will print. Write your guess in prediction , at the top, between the quotes. Then run it and compare. Any guess passes this stage: the point is to…
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Article Mini projects
Converting Temperatures in Python
…beginner Python programmer should be able to handle them. Functions for converting temperatures Let's define 2 functions necessary for our calculations. These will be the celsius_to_kelvin and…
