int(math.sqrt(num) + 1), 2): ifnot num % div: returnFalsereturnTruedefrun_program(N): total = 0for i in range(N): if is_prime(i): total += 1return totalif __name__ == "__main__": N = 10000000
is not as extendable(可扩展性差) cannot create virtual environments for arbitrarily installed python versions(无法创建任意 Python 版本的虚拟环境) is not upgrade-able via pip(无法通过 pip 进行升级) does not have as rich programmatic API(没有丰富的 API 编程方法扩展) 而这些不足之处在 Virtualenv ...
for seqLen in range(3, 6): for seqStart in range(len(message) - seqLen): # Determine what the sequence is and store it in seq: seq = message[seqStart:seqStart + seqLen] # Look for this sequence in the rest of the message: for i in range(seqStart + seqLen, len(message) - ...
def prime(m): for n in range(2,m): if m%n ==0: return return 1 n = int(input("正整数:")) for p in range(1,n+1): if n%p == 0 and prime(p) == 1: print(p) 3.4 函数默认参数 3.4.1教学目标 在Python语言中定义函数时可以预先为部分参数设置默认值,这样的好处是实际调用时可...
# Python program to check prime number# Function to check prime numberdefisPrime(n):returnall([(n%j)forjinrange(2,int(n/2)+1)])andn>1# Main codenum=59ifisPrime(num):print(num,"is a prime number")else:print(num,"is not a prime number")num=7ifisPrime(num):print(num,"is a ...
Python program for sum of cube of first N natural numbers Python program to check prime number Python program to find the largest prime factor of a number Python program to find prime numbers using sieve of Eratosthenes Python program to calculate prime numbers (using different algorithms) upto ...
importjava.util.Scanner;publicclassHappyProgram{publicstaticvoidmain(String args[]){Scannerinput_a=newScanner(System.in); System.out.print("Enter a number: ");intYourNumber=input_a.nextInt();if(YourNumber >10) System.out.println("Your number is greater than ten") ;if(YourNumber <=10) ...
上下文管理器对象存在以控制with语句,就像迭代器存在以控制for语句一样。 with语句旨在简化一些常见的try/finally用法,它保证在代码块结束后执行某些操作,即使代码块由return、异常或sys.exit()调用终止。finally子句中的代码通常释放关键资源或恢复一些临时更改的先前状态。
# Program to check if a number is prime or not num = 29 # To take input from the user #num = int(input("Enter a number: ")) # define a flag variable flag = False if num == 0 or num == 1: print(num, "is not a prime number") elif num > 1: # check for factors for...
>>>greet(yell)'HI, I AM A PYTHON PROGRAM!' 当然,您还可以定义一个新函数来生成不同的问候语。 例如,如果您不希望Python程序听起来像Optimus Prime,则以下耳语功能可能会更好: defwhisper(text):returntext.lower()+'...'>>>greet(whisper)'hi, i am a python program...' ...