python_list_comprehension.py

IN:
employees = [
    {
        "name": "John Don't",
        "performance": "medium",
        "salary": 10000
    },
    {
        "name": "Jane Does",
        "performance": "high",
        "salary": 9000
    }
]
def adjust_salary(employee):
    brackets = {
        "high": 1.2,
        "medium": 1.03,
        "low": 1
    }
    factor = brackets[employee["performance"]]
    current_salary = employee["salary"]
    return {
        "name" : employee["name"],
        "performance": employee["performance"],
        "salary": current_salary * factor
    }

[adjust_salary(employee) for employee in employees]

OUT:
[
   {
      "name":"John Don't",
      "performance":"medium",
      "salary":10300.0
   },
   {
      "name":"Jane Does",
      "performance":"high",
      "salary":10800.0
   }
]