In this section, we will see how to use if-else statements with a loop. If-else is used when conditional iteration is needed. For example, print student names who got more than 80 percent. The if-else statement checks the condition and if the condition is True it executes the block of...
Watch it together with the written tutorial to deepen your understanding: For Loops in Python (Definite Iteration)Python’s for loop allows you to iterate over the items in a collection, such as lists, tuples, strings, and dictionaries. The for loop syntax declares a loop variable that takes...
在for语句中,我们不需要显式地判断遍历是否结束,因为for语句会自动根据可迭代对象的长度来判断遍历是否结束。对于字符串来说,它是一个可迭代对象,它的长度就是字符串的长度。 在上面的示例代码中,string是一个字符串。当for语句遍历完字符串中的所有字符后,会自动结束循环,不再执行下一次迭代。 3. 示例代码 下面...
9):yieldidefsquared(seq):foriinseq:yieldi*ichain=squared(integers())forvalueinchain:print(value)...
statement # for loop body 列表必须是有限的，否则你会创建一个无限循环，这很少是你所需要的。另一...
While loops exist in virtually all programming languages, the Pythonforloop function is one of the easiest built-in functions to master since it reads almost like plain English.In this tutorial, we’ll cover every facet of theforloop. We’ll show you how to use it with a range of example...
python1---variable,condition,function and loop Python is like a programming language that's based on a snake. It is a weird language,is is strange,is's not easily understood by others.Welcome to being a PythonisaIt turns out that what Python was named for was Monty Python's Flying Circu...
Python provides two keywords to terminate a loop prematurely, they are Break and Continue. Break statement terminates the loopimmediately, we can introduce the break keyword with aconditional statementlikeifin our program. list= [1,2,3,4,]foriinlist:ifi ==3:breakprint(i) ...
嵌套循环(nested loop) print("Multiplication Table")#Display the number titleprint("|", end ='')forjinrange ( 1, 10) :print("", j, end ='')print( )#Jump to the new lineprint("---")#Display table bodyforiinrange ( 1, 10) :print( i,"|", end ='')forjinrange ( 1, 10...
Python 里面的「for 循环」很像读英文。通用形式的 for loop 如下: for a in A do something with a 1. 2. 其中for 和 in 是关键词,A 是个可迭代数据 (list, tuple, dic, set),a 是 A 里面的每个元素 enumerate 函数 enumerate(A) 不仅可以 A 中的元素,还顺便给该元素一个索引值 (默认从 0 开...