{"success":true,"course":{"concept_key":"CONCEPT#fdcbf91409d9538d79d2d8f127f3773e","final_learning_outcomes":["Create interactive Python scripts that accept user input and display formatted results.","Apply arithmetic, decision making, loops, and functions to solve simple programming problems."],"description":"Learn to build simple, interactive Python programs from scratch. 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This lesson shows you how Python’s f-strings embed variables and even mini-calculations directly inside text, making your output professional and readable.","segment_id":"H_TPIAEJl68_0_410","title":"Mastering Python F-string Formatting","url":"https://www.youtube.com/watch?v=H_TPIAEJl68&t=0s","micro_concept_id":"input_output_formatting"},{"sequence_number":5.0,"duration_seconds":367.599,"prerequisites":["Basic Python syntax","Strings and variables"],"learning_outcomes":["Write simple if statements","Differentiate == from =","Chain conditions with else and elif","Select appropriate comparison operators"],"concepts_taught":["Boolean values","if statements","else statements","elif chains","comparison operators"],"quality_score":7.9,"transition_from_previous":{"suggested_bridging_content":"","from_segment_id":"H_TPIAEJl68_0_410","overall_transition_score":8.4,"to_segment_id":"DZwmZ8Usvnk_0_367","pedagogical_progression_score":8.0,"vocabulary_consistency_score":9.0,"knowledge_building_score":8.5,"transition_explanation":"Uses boolean expressions constructed with operators from segments 3-4 inside if statements."},"before_you_start":"Programs often need to make choices—like greeting a user differently based on age. 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A prints the raw boolean True/False, not the words Pass/Fail. B still prints True/False unless additional logic is added. D misuses a loop for a single decision, adding unnecessary complexity."},{"difficulty":"hard","correct_option_index":1.0,"question":"Given a list of temperatures = [72, 68, 75], which code both iterates through the list and shows each value with the text “°F” (e.g., 72°F)?","option_explanations":["Incorrect: int + str raises TypeError.","Correct: proper loop and f-string formatting.","Incorrect: prints list once, not per value.","Incorrect: logic error—undefined t and incorrect condition."],"options":["for t in temperatures: print(t + \"°F\")","for t in temperatures: print(f\"{t}°F\")","print(f\"{temperatures}°F\")","while t in temperatures: print(f\"{t}°F\"); t+=1"],"question_id":"q2_loop_list","related_micro_concepts":["loops_iteration","collections_lists_tuples","input_output_formatting"],"discrimination_explanation":"Option B uses a for-loop to walk through the list and an f-string to format each individual temperature, directly combining concepts from loops, lists, and string formatting. A fails because t is an int and cannot concatenate with a string without casting. C prints the whole list once, not each element. D mis-uses while—t isn’t defined beforehand and integer increment doesn’t remove values from the list."},{"difficulty":"hard","correct_option_index":3.0,"question":"You need to display a user’s name in uppercase three times. 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B avoids duplication but lacks abstraction for reuse elsewhere. C defines a function but still duplicates calls instead of looping."},{"difficulty":"hard","correct_option_index":1.0,"question":"A program asks for the user’s age using input() and then adds 1 to show their age next year. Which line safely converts the input so arithmetic works?","option_explanations":["Incorrect: concatenates str and int -> error.","Correct: proper casting then arithmetic.","Incorrect: float works but unnecessary decimal; shows grasp issue.","Incorrect: adds str to int -> error."],"options":["next_age = input(\"Age?\") + 1","age = int(input(\"Age?\")); next_age = age + 1","age = input(\"Age?\"); next_age = float(age) + 1","next_age = int(input(\"Age?\")) + \"1\""],"question_id":"q4_input_cast","related_micro_concepts":["input_output_formatting","operators_expressions"],"discrimination_explanation":"Option B immediately casts the string result of input() to an integer, enabling arithmetic. 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Each segment is high-quality, self-contained, under 10 min, keeping cognitive load manageable. 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