calm_stoat_9871
Arbiter
Top 0.2%
Member Nº 0717
Joined May 2026
SQL
Storage Optimization
String Building
Ranking
Python
Nested Dicts
List Comprehension
Dict Iteration
Spark
Collecting Values
Inequality Joins
Distribution Functions
Data Modeling
Self-Referential
3NF
Many-to-Many
Solved
Python4
SQL1
Milestones
Top 100
Founder
2,957 runs in the past 26 weeksActive days: 29 · Max streak: 6
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Recent solves
Define a function make_counter() with a docstring 'Counter closure; each call bumps the count by 1.'
Python · medium · lesson
Define a function parse_name(full) that splits full on a single space and returns (first, last)
Python · medium · lesson
Define a function make_multiplier(factor) that returns an inner function multiply(n) that returns n
Python · medium · lesson
Complete calculate_bmi to return the BMI formula: weight divided by height squared, rounded to 1 dec
Python · medium · lesson
Complete fahrenheit_to_celsius to return the conversion formula: (fahrenheit - 32) * 5 / 9.
Python · medium · lesson
Complete the inner add function: add the amount to total and return the new total.
Python · medium · lesson
Complete the inner greet function to return the greeting, name, and punctuation combined.
Python · medium · lesson
Complete the nested functions: is_passing returns True if grade >= threshold
Python · medium · lesson
Use selective unpacking with _ placeholders to extract only the grade and major (3rd and 4th values)
Python · medium · lesson
Call analyze_text with 'Python is a great language' and unpack the three return values into variable
Python · medium · lesson