更新时间:2022-02-18 07:28:39
如果 int()
调用成功,十进制
已经一个数字。您只能在字符串上调用 .isdigit()
(正确的名称):
If the int()
call succeeded, decimal
is already a number. You can only call .isdigit()
(the correct name) on a string:
decimal = input()
if decimal.isdigit():
decimal = int(decimal)
另一种方法是使用异常处理;如果抛出 ValueError
,则输入不是数字:
The alternative is to use exception handling; if a ValueError
is thrown, the input was not a number:
while True:
print("Type a decimal number you wish to convert:")
try:
decimal = int(input())
except ValueError:
print("Please enter a number.")
continue
binary = bin(decimal)[2:]
而不是使用 bin()
函数并删除起始 0b
,您还可以使用 format()
函数,使用'b'
格式,将整数格式化为二进制字符串,不带前导文本:
Instead of using the bin()
function and removing the starting 0b
, you could also use the format()
function, using the 'b'
format, to format an integer as a binary string, without the leading text:
>>> format(10, 'b')
'1010'
format()
函数可以轻松添加前导零:
The format()
function makes it easy to add leading zeros:
>>> format(10, '08b')
'00001010'