定义一个函数is_prime(n),判断一个正整数n是否为素数(质数)。如果是素数,返回True;如果不是素数,返回False。 提示:素数是指只能被1和自身整除的正整数,例如2、3、5、7、11、13等。 示例输出: ``` print(is_prime(2)) # 输出 True print(is_prime(10)) # 输出 False print(is_prime(7)) # 输出...
# It is possible to refer to specific local distribution paths. ./downloads/numpy-1.9.2-cp34-none-win32.whl # It is possible to refer to other requirement files or constraints files. -r other-requirements.txt -c constraints.txt # It i...
复制 >>>importkeyword>>>keyword.kwlist['False','None','True','and','as','assert','break','class','continue','def','del','elif','else','except','finally','for','from','global','if','import','in','is','lambda','nonlocal','not','or','pass','raise','return','try',...
var = 100if var < 200: print "Expression value is less than 200" if var == 150: print "Which is 150" elif var == 100: print "Which is 100" elif var == 50: print "Which is 50"elif var < 50: print "Expression value is less than 50"else: print "Could not find true expres...
Return a logger with the specified name or, if name is None, return a logger which is the root logger of the hierarchy. If specified, the name is typically a dot-separated hierarchical name like ‘a’, ‘a.b’ or ‘a.b.c.d’. Choice of these names is entirely up to the developer...
Plotnine is the implementation of the R packageggplot2in Python. It replicates the syntax of R packageggplot2and visualizes the data with the concept of the grammar of graphics. It creates a visualization based on the abstraction of layers. When we are making a bar plot, we will build the...
请写一个函数,判断一个整数是否为素数。 代码示例: ```python def is_prime(n): if n < 2: return False for i in range(2, int(n**0.5) + 1): if n % i == 0: return False return True ```相关知识点: 试题来源: 解析 参考解释: 上述代码使用循环遍历2到n的平方根的整数范围,判断输入...
一、安装python之后,调用graphics模块可能会出现如用报错,这说明就需要安装或复制文件graphics.py到安装目录下。 >>>fromgraphics import *Traceback (most recent call last): File"<pyshell#1>", line1,in<module>fromgraphics import *ModuleNotFoundError: No module named'graphics' ...
A、is对比两个变量指向是否为同一对象,==对比两个变量指向对象是否为同值 B、is对比两个变量指向对象是否为同一值,==是对比两个变量指向是否为同一对象 C、is与==除均可用于比较对象是否为同一对象外,==还可以用于比较对象的值 D、以上说法均不正确相关...
line_terminator : str, optional The newline character or character sequence to use in the output file. Defaults to `os.linesep`, which depends on the OS in which this method is called ('\\n' for linux, '\\r\\n' for Windows, i.e.). chunksize : int or None Rows to write at a...