"""
槽的格式限定
冒号：左边填序号或名称，右边填写格式
"""
num = 17

print("二进制")
n1 = "{:b}".format(num)
print(n1)

print("八进制")
n2 = "{:o}".format(num)
print(n2)

print("十进制")
n3 = "{:d}".format(num)
print(n3)

print("十六进制")
n4 = "{:x}".format(num)
print(n4)