Example: Print first 10 numbers using a for loop Here we used the range() function to generate integers from 0 to 9 Next, we used theforloop to iterate over the numbers produced by therange()function In the body of a loop, we printed the current number. ...
# 创建一个包含前5个平方数的列表squares = [x**2 for x in range(1, 6)]print(squares) # 输出: [1, 4, 9, 16, 25]# 过滤出列表中的偶数even_numbers = [x for x in range(10) if x % 2 == 0]print(even_numbers) # 输出: [0, 2, 4, 6, 8]7.循环中的异常处理：使用try和exc...
In computer science, afor-loop(or simplyfor loop) is a control flow statement for specifying iteration, which allows code to be executed repeatedly。(作用:介绍了for循环是什么?) A for-loop has two parts: a header specifying the iteration, and a body which is executed once per iteration. (...
range(a,b,n),就可以生成一个从a到b-1 的整序列,并且间隔为n range(a,b)其实就是特殊的range(a,b,n),n如果不填默认为1罢了 比如 代码语言:javascript 代码运行次数:0 运行 AI代码解释 foriinrange(5):print(i)print('---')forjinrange(5,8):print(j) 代码语言:javascript 代码运行次数:0 运行...
AI代码解释 A=[[1,2,3],[4,5,6],[7,8,9]]#print(len(A))#矩阵行数#print(len(A[0]))#矩阵列数foriinrange(len(A[0])):#len(A[0])矩阵列数forjinrange(i,len(A)):#len(A)矩阵行数 #转置就是A[i][j]和A[j][i]互换
for Loop with Python range() In Python, the range() function returns a sequence of numbers. For example, # generate numbers from 0 to 3 values = range(0, 4) Here, range(0, 4) returns a sequence of 0, 1, 2 ,and 3. Since the range() function returns a sequence of numbers, we...
foriinrange(5):print(i)在这里，循环将执行5次，变量i的取值范围为0到4。4.3 列表推导式实现简洁...
for x in range(2, n): if n % x == 0: print(n, 'equals', x, '*', n//x) break else: # loop fell through without finding a factor print(n, 'is a prime number') 1. 2. 3. 4. 5. 6. 7. 8. 运行结果如下: 2 is a prime number ...
for语句实际上解决的是循环问题。在很多的高级语言中都有for循环(for loop)。 for语句其实是编程语言中针对可迭代对象的语句,它的主要作用是允许代码被重复执行。看一段来自维基百科的介绍: In computer science, afor-loop(or simplyfor loop) is a control flow statement for specifying iteration, which allows...
第一种循环:for循环 Python的for循环(for loop)用于将一个可迭代对象(iterable)中的元素按一定的顺序迭代出来。格式: for<item>in<iterable>: [...] 其中<item>用来表示每一轮循环被迭代出来的元素,<iterable>表示要被迭代的可迭代对象。 注意<iterable>后面有一个“:”,这一点与C系列语言不同。