Knowledge Components for Collection Based Iteration in Python

• KC001: Integers and floats are different numeric types
• KC002: The iteration property takes on the type of the elements of the list
• KC003: The iteration property is NOT the list
• KC004: Numeric types are different from strings
• KC005: Numeric types are different from booleans
• KC006: The iteration property takes on each value of the list
• KC007: The iteration property is a single item
• KC008: The list is multiple items
• KC009: The iteration property and the list should be different
• KC010: Initializations for sums should be 0
• KC011: Initializations for accumulators should be 0
• KC012: The sum and the list are two different items
• KC013: The accumulator and the list are two different items
• KC014: A property shouldn’t be used before it’s initialized
• KC015: A property shouldn’t be initialized to itself
• KC016: An initialization for sums isn’t an update
• KC017: An initialization for accumulators isn’t an update
• KC018: Update for sum is accumulator = accumulator + iteration property
  • KC018-(1-3) locations of accumulator (x2) and iteration property
  • KC018-(4-6) presence of accumulator and iteration property and no presence of list
• KC019: Update for accumulation is accumulator = accumulator + X
  • KC019-(1-3) locations of accumulator (x2) and accumulator_modifier
  • KC019-(4-6) presence of accumulatorm accumulator_modifier and no presence of list
• KC020: numbers and lists are two different things numbers can’t be added to lists might be one as well
• KC022: The list is not used in accumulation
• KC023: The list is not used as an accumulator
• KC024: The iteration property is not an accumulator
• KC025: for each loop is for iter_prop in list
• KC026: Update for counting is counter = counter + 1
  • KC026-(1-3) locations of counter (x2) and 1
  • KC026-(4-6) presence of counter and 1 and no presence of list
• KC027: for filtering, if statement goes inside loop
  • KC027-(1-2) location and presence of if statement
• KC028: list is not used for filtering
• KC029: filtering should use the iteration property
• KC030: The syntax of an empty list
• KC031: A new list should be different from the old list
• KC032: Building a new list is different from accumulating
• KC034: filtering should be done on old list
• KC035: the key word next does not exist
• KC036: List filtering is not an accumulation pattern
• KC037: Need to call append
• KC038: modifications should be done on new list
• KC038: Modifications should be done on new list
• KC039: Transformations happen on old values
• KC040: Transformed values are appended to the new list (could probably make generalizations to list building patterns)
• KC041: Meaningful list name
• KC042: Menngiful accumulator name
• KC043: meaningful iteration property name
• KC044: Knows to create an iteration property
• KC045: Knows to output response
• KC046: Knows to create an accumulator
• KC047: Knows to create a list property
• KC048: Differentiates between count and sum when summing a list of countable items
• KC049: Initializations for counts should be 0
• KC050: Initialize list from data block
• KC051: The count and the list are two different items
• KC052: An initialization for count isn’t an update
• KC053: string types and lists are two different things