1. 理解range()函数的基本用法 在Python 中,range()是一个内置函数,其基本用法是: # range(start, stop[, step]) 1. start是起始值,stop是终止值,step是步长。 2. 使用range()函数生成负数值 如果我们想要生成一个负数范围,比如从 -1 到 -10,我们可以这样设置参数: negative_range=range(-1,-11,-1)...
# 定义一个函数来处理负数范围的字符串defnegative_range(s):start,end=map(int,s.split('-'))# 将字符串切片,并转换为整数returnrange(start,end-1,-1)# 返回负数范围 1. 2. 3. 4. 3. 调用函数并输出结果 最后,我们可以调用定义好的函数,并输出结果。在这里,我们将调用函数negative_range,并将字符串...
# printing range from negative to positivefornuminrange(-2,5,1):print(num, end=", ") Python范围从正数到负数 在此示例中,我们可以学习如何有效地使用step参数来显示从正到负的数字。 print(" printing range from Positive to Negative")fornuminrange(2,-5,-1):print(num, end=", ") 将range(...
DIM] , positive: 2D tensor [BATCH_SIZE, DIM] , negative: 2D tensor [BATCH_SIZE, DIM] , DIM : feature vector dimension (e.g., 128) , BATCH_SIZE : batch size 32 , the input tensors should be normalized to [0,1] range. ,
The given end point is never part of the generated sequence; range(10) generates 10 values, the legal indices for items of a sequence of length 10. It is possible to let the range start at another number, or to specify a different increment (even negative; sometimes this is called the ...
As long as step is one or negative one, it’s straightforward to reverse a range: Python >>> def reverse_range(rng): ... return range( ... rng.stop - rng.step, ... rng.start - rng.step, ... -rng.step, ... ) ... >>> reverse_range(range(5, 0, -1)) range(1,...
= is\b)', text) # 使用否定预搜索断言匹配不包含 "is" 的单词 negative_result = re.findall(...
range(start, stop[, step]) The return value is calculated by the following formula with the given constraints: r[n] = start + step*n (forboth positiveandnegative step)where, n >=0andr[n] < stop (forpositive step)where, n >= 0andr[n] > stop (fornegative step) ...
其中 seq 可以是包括列表、元组、range序列,甚至字符串在内的任意Python序列类型。如果 seq 为空,则引发 IndexError。 import random random.choice(["我","爱","学","习","Python","编","程"]) random.choice("今天天气不错") random.choices(population, weights=None, *, cum_weights=None, k=1):...
def range_with_zero(number): for i in range(0, number): print(i, end=' ') def range_with_no_zero(number): for i in range(number): print(i, end=' ') range_with_zero(3) # 0 1 2 range_with_no_zero(3) # 0 1 2