Learn more about while loops in our Python While Loops Chapter.Looping Using List ComprehensionList Comprehension offers the shortest syntax for looping through lists:Example A short hand for loop that will print all items in a list: thislist = ["apple", "banana", "cherry"][print(x) for ...
Learn to use for loop in Python to iterate over a sequence and iterable, such as a list, string, tuple, range. Implement fixed number of iterations using a for loop
Python nested list loop We can have nested lists inside another list. loop_nested.py #!/usr/bin/python nums = [[1, 2, 3], [4, 5, 6], [7, 8, 9]] for i in nums: for e in i: print(e, end=' ') print() We have a two-dimensional list of integers. We loop over the ...
In this tutorial, you'll learn all about the Python for loop. You'll learn how to use this loop to iterate over built-in data types, such as lists, tuples, strings, and dictionaries. You'll also explore some Pythonic looping techniques and much more.
Be cautious because the double list comprehension works like a nested for loop so it quickly generates a lot of results. In the following example, we are combining the elements from two lists if they are not equal. list1=[1,2,3]list2=[3,2,1]combined=[(x,y)forxinlist1foryinlist2if...
For loop works pretty much exactly like the list. Let's create a tuple and store it in the variablemy_tuple. my_tuple = (1,"some text",234,"more text") We can iterate over the items of the tuple just like we did in lists, ...
list_1 = [1, 2, 3, 4] list_2 = ['a', 'b', 'c'] for i, j in zip(list_1, list_2): print(i, j) Run Code Output 1 a 2 b 3 c Using zip() method, you can iterate through two lists parallel as shown above. The loop runs until the shorter list stops (unless other...
forxinrange(2,30,3): print(x) Try it Yourself » Else in For Loop Theelsekeyword in aforloop specifies a block of code to be executed when the loop is finished: Example Print all numbers from 0 to 5, and print a message when the loop has ended: ...
Next, you'll move on to the for loop: once again, you'll learn how you can construct and use a for loop in a real-life context. You'll also learn the difference between using a while loop and a for loop. Also the topic of nested loops After, you'll see how you can use the ...
我们可以使用来遍历列表项for loop。 charList = ["a","b","c"]forxincharList:print(x)# a# b# c 4. Check if a item exists in the list 使用'in'关键字确定列表中是否存在指定的项目。 charList = ["a","b","c"]if"a"incharList:print("a is present")# a is presentif"d"incharList...