Thezipfunction takes multiple lists and returns an iterable that provides a tuple of the corresponding elements of each list as we loop over it. Note thatzipwith different size lists will stop after the shortest list runs out of items. You may want to look intoitertools.zip_longestif you ne...
python for loop with index #!/usr/bin/python3 Blue = 17 GREEN = 27 RED = 22 LEDs = list([RED, GREEN, Blue]) for index, led in enumerate(LEDs): print('led = ', LEDs[index]) # 22, 27, 17 # 等价于,start default 0 for index, led in enumerate(LEDs, start=0): print('led...
Print all items, using a while loop to go through all the index numbers thislist = ["apple", "banana", "cherry"]i = 0 while i < len(thislist): print(thislist[i]) i = i + 1 Try it Yourself » Learn more about while loops in our Python While Loops Chapter.Looping...
# Access a single item of Python List a = [52, 85, 41,'sum','str', 3 + 5j, 6.8] # access 3rd item with index 2 x = a[2] print(x) print(type(x)) 执行和输出: 2.2. 访问 Python 列表中的多个项 通过提供范围索引,你还可以该列表的子列表或多个项。
):sht_3.range("A1:AZ48").column_width=1.1sht_3.range('A1:AZ48').row_height=7.8list_...
print('The index of i:', index) Run Code Output The index of e: 1 The index of i: 6 Traceback (most recent call last): File "*lt;string>", line 13, in ValueError: 'i' is not in list Also Read: Python Program to Access Index of a List Using for LoopBefore...
Each element in a list is associated with a number, known as an index. The index of first item is 0, the index of second item is 1, and so on. Index of List Elements We use these indices to access items of a list. For example, languages = ['Python', 'Swift', 'C++'] # ac...
states = list(capitals.keys()) random.shuffle(states) # ➍ # TODO: Loop through all 50 states, making a question for each. 测验的文件名将是capitalsquiz<N>.txt,其中<N>是来自quizNum``for循环计数器的测验的唯一数字。capitalsquiz<N>.txt的答案将被保存在一个名为capitalsquiz_answers<N>.txt...
Let’s take a closer look at common ways aforloop can causeList Index Out of Rangeand how to either avoid it completely or gracefully handle this error when it crops up. What causes the “List Index Out of Range” error? As Python uses zero-based indexing, when you try to access an...
要将字母转换成数字,调用openpyxl.utils.column_index_from_string()函数。要从数字转换成字母,调用openpyxl.utils.get_column_letter()函数。在交互式 Shell 中输入以下内容: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 >>>importopenpyxl>>>from openpyxl.utilsimportget_column_letter,column_index_from_...