What is the result of the following code?```pythonmy_list = [1, 2, 3, 4, 5]print(my_list[-3])```A. 1B. 2C. 3D. 4Answer: C. 3 相关知识点: 试题来源: 解析C. 3在Python 中,负索引代表从列表末尾开始倒数。具体规则如下:- `my_list[-1]` 是最后一个元素(5),-...
The wordprintis a Function inPython. What is a function? A function is a block of code that can perform a specific action. In addition to this, these block of code doesn't execute until you call or invoke the function. Majorly functions are created with the hope that we will use the ...
In Python, \n is a type of escape character that will create a new line when used. There are a few other escape sequences, which are simple ways to change how certain characters work in print statements or strings. These include \t, which will tab in your text, and \", which will ...
print("My name is", name, "and I am", age, "years old.") # Output: My name is Alice and I am 25 years old. # Changing the end parameter print("Hello", end=" ") print("World!") # Output: Hello World! Note that in Python 2.x, the print statement is used instead of the...
What is functools in Python? Tip - Use the round() function with negative arguments Tip - The print function can take additional arguments Tip - Find the longest String in a List in Python using the max() function Tip - How to loop over multiple Lists in Python with the zip function ...
Python is a high-level, general-purpose programming language known for its readability and simplicity. Learn the features, applications, and advantages of Python.
isdecimal:str,unicode num0='4'num1=b'4'#bytesnum2=u'4'#unicode,python3中无需加u就是unicodenum3='四'#中文数字num4='Ⅳ'#罗马数字print(num0.isdecimal())#print(num1.)print(num2.isdecimal())print(num3.isdecimal())print(num4.isdecimal()) ...
False>>>WTF()isWTF()# 也不相同 False>>>hash(WTF())==hash(WTF())# 哈希值也应该不同 True>>>id(WTF())==id(WTF())True 说明:当调用 id 函数时,Python 创建了一个WTF类的对象并传给id函数,然后id函数获取其 id 值(也就是内存地址),然后丢弃该对象,该对象就被销毁了。
Here's a fun project attempting to explain what exactly is happening under the hood for some counter-intuitive snippets and lesser-known features in Python.While some of the examples you see below may not be WTFs in the truest sense, but they'll reveal some of the interesting parts of ...
what's the 内置方法 内置方法就是python中已经写好的方法,我们不用管原理直接拿来用就行。所以内置方法是规定好的,我们想要学会就必须是全部记住。 字符串的内置方法 字符串的内置方法包括:移除空白strip、切分split、长度len、切片(切出子字符串)、startswith和endswith、替代replace、查找find(顾头不顾尾,找不到...