python3 : input() 接受用户的输入,无论用户输入的是什么类型,最终返回的一定是字符串 注:在python2 中 raw_input(">>:") 和python3 的input() 是一样的,无论用户输入的是什么类型,最终返回的一定是字符串 eg :python2 >>> input(">>:")>>:sean Traceback (most recent call last): File"<stdin...
Python2.x与Python3.x版本区别:http://www.runoob.com/python/python-2x-3x.html 示例解读Python2和Python3之间的主要差异:https://www.oschina.net/news/99235/difference-between-python2-and-python-3 13个python3才能用的特性:https://mp.weixin.qq.com/s/eYeY2lcaPCsIIFOyZ6v-OQ 特别注意: 在python2...
There are a few minor downsides, such as slightly worse library support1and the fact that most current Linux distributions and Macs are still using 2.x as default, but as a language Python 3.x is definitely ready. As long as Python 3.x is installed on your user's computers (which ough...
then you will get the error and vice versa. In other words, the syntax ofPython 2andPython 3has significant differences. You can take them as two different programming languages, though it comes under the same umbrella!
If you would like your Python 3 code to be backwards-compatible with Python 2, though, you can keep the u before your string. ###Continued Development The biggest difference between Python 3 and Python 2 is not a syntactical one, but the fact that Python 2.7 will lose continued support ...
# python2user_input=raw_input('请输入一个数字:\n')# python3user_input=input('请输入一个数字:\n')print('user_input=',user_input) 其中\n实现换行。用户按下回车键(enter)退出,其他键显示。 对于print输出,默认输出是换行的,如果需要实现不换行,可以指定参数end,如下所示: ...
setup(name='Your Library',version='1.0',classifiers=[# make sure to use :: Python *and* :: Python :: 3 so# that pypi can list the package on the python 3 page'Programming Language :: Python','Programming Language :: Python :: 3'],packages=['yourlibrary'],# make sure to add cu...
例如,你可以这么写: #从圆c的面积中减去正方形s的面积 areaC = pi*radius**2 areaS = side*side difference = areaC-areaS Python允许多重赋值。语句: x, y = 2, 3 会将x绑定到2并将y绑定到3。赋值语句右侧的表达式会在绑定更改之前求值,因此你可以非常方便地用多重赋值来交换两个变量的绑定。例如,...
Unicode encoding is able to store different language characters and Emojis as well. Improving Library Standards: There is a huge difference between Python 2 libraries and Python 3 libraries.Many libraries developed on Python 2 are not compatible with Python 3. So the library implementation for Pytho...
Python3中只有整形,不分长短型 使用type()查看数据类型 >>> a = 77777 >>> print(type(a)) <type 'int'> 1. 2. 3. 2.浮点型(float) 浮点型数值用于保存带小数点的数值,Python 的浮点数有两种表示形式: 十进制形式:这种形式就是平常简单的浮点数,例如 5.12、512.0、0.512。浮点数必须包含一个 小数点...