print('for loop with test\t\t', timeit.timeit(for_loop_with_test, number=1)) if __name__ == '__main__': main() # => while loop 4.718853999860585 # => for loop 3.211570399813354 # => for loop with increment 4.602369500091299 # => for loop with test 4.18337869993411 可以看出,增加...
print('while loop\t\t', timeit.timeit(while_loop, number=1)) print('for loop\t\t', timeit.timeit(for_loop, number=1)) print('for loop with increment\t\t', timeit.timeit(for_loop_with_inc, number=1)) print('for loop with test\t\t', timeit.timeit(for_loop_with_test, number=...
print('while loop\t\t', timeit.timeit(while_loop, number=1)) print('for loop\t\t', timeit.timeit(for_loop, number=1)) print('for loop with increment\t\t', timeit.timeit(for_loop_with_inc, number=1)) print('for loop with test\t\t', timeit.timeit(for_loop_with_test, number=...
timeit.timeit(for_loop_with_test,number=1))if__name__=='__main__':main()#=>whileloop4.718853999860585#=>forloop3.211570399813354#=>forloopwithincrement4.602369500091299#=>forloopwithtest4.18337869993411可以看出，
with increment\t\t',timeit.timeit(for_loop_with_inc,number=1))print('for loop with test\t\t',timeit.timeit(for_loop_with_test,number=1))if__name__=='__main__':main()#=>whileloop4.718853999860585#=>forloop3.211570399813354#=>forloopwithincrement4.602369500091299#=>forloopwithtest...
Generate Number Sequences with range(): 使用for ... in range ()循环 for x in range(2, -1, -1): print(x) Other Iterators 其他迭代器 例题: while和for...in实现循环 # use while to run loop guess_me = 7 number = 2 while True: ...
while 和 for 是 Python 中常用的两种实现循环的关键字,它们的运行效率实际上是有差距的。比如下面的测试代码: importtimeitdefwhile_loop(n=100_000_000):i=0s=0whilei<n:s+=i i+=1returnsdeffor_loop(n=100_000_000):s=0foriinrange(n):s+=ireturnsdefmain():print('while loop\t\t',timeit...
With Python, you can use while loops to run the same task multiple times and for loops to loop once over list data. In this module, you'll learn about the two loop types and when to apply each.Learning objectives After you've completed this module, you'll be able to: Identify when ...
while陳述句(statement)所建立的迴圈不像for迴圈,需要在一定的範圍內迭代;也不像if陳述句,只存在執行一次或不執行的狀況。只要陳述的條件為真True,while迴圈就會持續到天荒地老,或者電腦當掉。 如果你對for迴圈或if陳述句不熟悉,可以閱讀〈Python for 迴圈(loop)的基本認識與7種操作〉、〈Python if 陳述句的...
Python for loop and while loop #!pyton2#-*- coding:utf-8 -*-forletterin"Python":print"Current letter is:",letter fruits=["apple","mango","pear"]forfruitinfruits:printfruitforindexinrange(len(fruits)):printfruits[index]>python2 test.py...