题解 | #遍历字典#

operator_dict = {"<": "less than", "==": "equal"}
print("Here is the original dict:")
for x in sorted(operator_dict):
    print(f"Operator {x} means {operator_dict[x]}.")
print(" ")
operator_dict[">"] = "greater than"
print("The dict was changed to:")
for x in sorted(operator_dict):
    print(f"Operator {x} means {operator_dict[x]}.")