list_1 = [0, 0, 0, 1, 0, 0, 0, 0] # any(a list with at least one non-zero entry) returns True print(any(list_1)) # Output True list_2 = [0j, 0, 0, 0.0, 0, 0, 0.0, 0] # any(a list of zeros) returns False print(any(list_2)) # Output False list_3 = [Tr...
# any(a list with at least one non-zero entry) returns True print(any(list_1)) # Output True list_2 = [0j, 0, 0, 0.0, 0, 0, 0.0, 0] # any(a list of zeros) returns False print(any(list_2)) # Output False list_3 = [True, False, False] # any(a list with at least...
numbers = 1, 2, 3isinstance(numbers, list)Trueisinstance(numbers, str)False 也可以把多个类型放在元组中,其中一个与对象的类型相符即为True,若无相符则为False。如: numbers = 1, 2, 3isinstance(numbers, (list, str))True dir()示例: dir(list) ’__add__’, ‘__class__’, ‘__contains__...
D', 'E'] >>> letters ['a', 'b', 'C', 'D', 'E', 'f', 'g'] >>> # now remove them >>> letters[2:5] = [] >>> letters ['a', 'b', 'f', 'g'] >>> # clear the list by replacing all the elements with an empty list >>> letters[:] = [] >>> letters [...
```# Python script to send personalized emails to a list of recipientsimport smtplibfrom email.mime.text import MIMETextfrom email.mime.multipart import MIMEMultipartdef send_personalized_email(sender_email, sender_password, recipients, ...
reverse() print(my_list) # ['d', 'c', 'b', 'a'] ▍24、使用步进函数对字符串切片 my_string = "This is just a sentence" print(my_string[0:5]) # This # Take three steps forward print(my_string[0:10:3]) # Tsse ▍25、反向切片 my_string = "This is just a sentence" ...
# creating a list of lettersimport stringlist(string.ascii_lowercase)alphabet = list(string.ascii_lowercase)# list comprehensiond = {val:idx for idx,val in enumerate(alphabet)} d#=> {'a': 0,#=> 'b': 1,#=> 'c': 2,#=> ...#=> 'x': 23,#=> 'y': 24,#=> 'z':...
Write a Python program to find the list of words that are longer than n from a given list of words.Visual Presentation:Sample Solution:Python Code:# Define a function called 'long_words' that takes an integer 'n' and a string 'str' as input def long_words(n, str): # Create an ...
Python sort list by case By default, the strings with uppercase first letters are sorted before the other strings. We can sort strings regardless of their case as well. case_sorting.py #!/usr/bin/python text = 'Today is a beautiful day. Andy went fishing.' ...
当您使用序列(例如 alist或 a )时tuple,生成的有序字典中项目的顺序与输入序列中项目的原始顺序相匹配。如果您使用 a set,就像上面的第二个示例一样,那么在OrderedDict创建之前,项目的最终顺序是未知的。 如果您使用常规字典作为OrderedDict对象的初始值设定项,并且您使用的是 Python 3.6 或更高版本,那么您将获得...