在Python中,我们可以使用字符串乘法操作符*来实现字符串的重复: # 将字符串重复指定次数repeated_string=input_string*repeat_times 1. 2. 步骤3:输出重复后的字符串并换行 最后,我们需要输出重复后的字符串并换行。在Python中,我们可以使用print()函数来输出字符串,并在末尾加上"\n"来实现换行
python timeit.py [-n N] [-r N] [-s S] [-p] [-h] [--] [statement]Options:-n/--number N: how many timestoexecute'statement' (default: see below)-r/--repeat N: how many timestorepeat the timer (default5) -s/--setup S: statementtobe executed once initially (default'pass')...
@repeat(num_times=4)defgreet(name):print(f"Hello {name}")>>>greet("World")HelloWorldHelloWorldHelloWorldHelloWorld 上面这段代码是一段不完成的代码,我们希望有这样一种装饰器repeat,能够接收一个参数n,是几就执行几次。例如我们希望某个函数A执行4次,另一个函数B执行8次,指定装饰器参数就很方便了。那么...
select hyper-parameters、repeat 100 times,每个任务之间往往是独立的,天然满足并行计算的设定。这里推荐python的一个package叫 “joblib” 操作简单,mark一下。 但值得注意的是,如果个人计算机内存不够,分发的任务不多,用并行反而会更慢。 2. np.array()很慢,list comprehensions 很快 法则1:与循环无关的操作,要...
def wrapper_repeat(*args, **kwargs): for _ in range(num_times): value = func(*args, **kwargs) return value This wrapper_repeat() function takes arbitrary arguments and returns the value of the decorated function, func(). This wrapper function also contains the loop that calls the decor...
3.7 itertools.repeat(object[, times]) 来看看第三个无限迭代的函数,将objext重复times次然后停止 实例: import itertools partlist1=’1234’ print(list(itertools.repeat(partlist1,2))) 运行结果是: [‘1234’, ‘1234’] 3.8 itertools.dropwhile(predicate, iterable)/itertools.takewhile(predicate, iterable...
import string print(string.ascii_uppercase) 执行结果: ABCDEFGHIJKLMNOPQRSTUVWXYZ #digits:生成所有数字。 import string print(string.digits) 执行结果: 0123456789 #punctuation:生成所有标点符号。 import string print(string.punctuation) 执行结果: !"#$%&'()*+,-./:;<=>?@[\]^_`{|}~ 13...
寻找最长的多次重复(Finding the Longest Multiple Repeat) Given: A DNA string s (of length at most 20 kbp) with $ appended, a positive integer k, and a list of edges defining the suffix tree of s. Each edge is represented by four components: ...
In the first example, you use the repetition operator (*) to repeat the "Hello" string three times. In the second example, you change the order of the operands by placing the integer number on the left and the target string on the right. This example shows that the order of the operan...
import random import string print(string.digits) print(string.ascii_letters) s=string.digits + string.ascii_letters v=random.sample(s,4) print(v) print(''.join(v)) 代码语言:javascript 代码运行次数:0 运行 复制 0123456789 abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ ['n', 'Q', '4'...