如何用三种不同方法，输入两个浮点数并输出其四则运算后的算式而非答案
“Devil组”引证GPT后的撰写：
用字符串格式化
a = float(input("请输入第一个浮点数："))
b = float(input("请输入第二个浮点数："))
print("{:.2f} + {:.2f} = {:.2f}".format(a, b, a + b))
print("{:.2f} - {:.2f} = {:.2f}".format(a, b, a - b))
print("{:.2f} * {:.2f} = {:.2f}".format(a, b, a * b))
print("{:.2f} / {:.2f} = {:.2f}".format(a, b, a / b))
用字符串拼接
a = float(input("请输入第一个浮点数："))
b = float(input("请输入第二个浮点数："))
print(str(a) + " + " + str(b) + " = " + str(a + b))
print(str(a) + " - " + str(b) + " = " + str(a - b))
print(str(a) + " * " + str(b) + " = " + str(a * b))
print(str(a) + " / " + str(b) + " = " + str(a / b))
用 f-string
a = float(input("请输入第一个浮点数："))
b = float(input("请输入第二个浮点数："))
print(f"{a:.2f} + {b:.2f} = {a + b:.2f}")
print(f"{a:.2f} - {b:.2f} = {a - b:.2f}")
print(f"{a:.2f} * {b:.2f} = {a * b:.2f}")
print(f"{a:.2f} / {b:.2f} = {a / b:.2f}")