for 变量列表 in 可迭代对象: 语句块1 else: 语句块2 说明: else子句部分可以省略(用while语句类似) 当在循环语句内部用break终止循环时,else子句部分的语句不会执行 1 2 3 4 5 6 7 8 # 示例: # 此示例示意for语句订语法和用法 s="ABCDE" forchins: print("ch绑定---->".ch) else: p
\n")for number in range(100): if (number%3 ==2) and (number%5 ==3) and (number%7 ==2): # 判断是否符合条件 print("答曰：这个数是",number) # 输出符合条件的数 运行程序，输出结果如下：今有物不知其数，三三数之剩二，五五数之剩三，七七数之剩二，问几何？答曰：这个数...
for i in range(3): if i == 2: break print(i, end=' ') # 打印0和1 else: print("Loop completed without encountering a 'break' statement.")5.循环控制语句：range()函数：生成一个起始默认为0的序列，通常与for循环一起使用。def print_numbers(n): for i in range(1, n+1): print(i)...
>>> a = 6 >>> while a: ... if a % 2 ==0: ... break ... else: ... ...
根据Python的缩进规则,如果if语句判断是True,就把缩进的两行print语句执行了,否则,什么也不做。 可以通过下图来简单了解条件语句的执行过程: if 语句 Python中if语句的一般形式如下所示: ifcondition_1:statement_block_1elifcondition_2:statement_block_2else:statement_block_3 ...
Python的矩阵传播机制(Broadcasting)我们知道在深度学习中经常要操作各种矩阵(matrix)。...回想一下,我们在操作数组(list)的时候,经常习惯于用for循环(for-loop)来对数组的每一个元素进行操作。...数据量小的话还不明显,如果数据量大了,尤其是深度学习中我们处
Python break Statement Example Gives is a Python program which iterates over the characters of sequence “Python”. The loop uses break statement to terminate immidiately as soon as character ‘h’ is encounterd in conditional expression of if statement. for s in "python": if s == "h":...
Python for loop with string The following example uses Pythonforstatement to go through a string. for_loop_string.py #!/usr/bin/python word = "cloud" for let in word: print(let) We have a string defined. With theforloop, we print the letters of the word one by one to the terminal...
Let’s look at an example that uses thebreakstatement in aforloop: number=0fornumberinrange(10):ifnumber==5:break# break hereprint('Number is '+str(number))print('Out of loop') Copy The variablenumberis initialized at 0 in this small program. Then aforstatement constructs the loop if...
forxinrange(6): print(x) else: print("Finally finished!") Try it Yourself » Note:Theelseblock will NOT be executed if the loop is stopped by abreakstatement. Example Break the loop whenxis 3, and see what happens with theelseblock: ...