python函数编程 急需要详细编程

Question

python函数编程 急需要详细编程

Answer 1

def DisplayAll(num):
try:
num = float(num) # 转为浮点
except ValueError as e:
print(e)
finally:
print('%.2f' % num) #2位小数
print(str(num).center(30,'*')) #30位居中 * 补位
print('%20s' % num) #20位右对齐