Tag: python
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Python 101: Json to object
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Method: json.loads() 正确方法：json.loads() Explanation: 解释： In Python, the json module is used to work with JSON data. 在 Python 中，json 模块用于处理 JSON 数据。 To convert a JSON string into a corresponding Python object, you should use the json.loads() method. 要将 JSON 字符串转换为相应的 Python 对象，您应该使用 json.loads() 方法。 Here’s a breakdown of…
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Python 101: bool Result of the Python Code
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Result of the Python Code: bool([]) == bool(None) The result of this expression is True. Explanation: Understanding bool([]): In Python, the bool() function is used to convert a value to a boolean (True or False). An empty list [] is considered a "falsy" value, meaning when converted to a boolean,…
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Python 101: defaultdict
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defaultdict is a subclass of Python’s built-in dict class. It is part of the collections module and provides all the functionalities of a regular dictionary with an additional feature: if you try to access or modify a key that does not exist in the dictionary, defaultdict automatically creates the key…
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Python 101: Learning Python Through Code Examples
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Python is known for its simplicity and elegance, making it an excellent language for both beginners and experienced programmers. One of the best ways to learn Python is by solving coding problems and understanding real-world examples. In this blog, we’ll explore a classic problem, "Group Anagrams," and solve it step-by-step…
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Python 101: zip_longest Code Breakdown
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Code Breakdown ''.join(a + b for a, b in zip_longest(word1, word2, fillvalue='')) Step 1: Understanding zip_longest English: The zip_longest function is imported from the itertools module. It takes multiple iterables (in this case, word1 and word2) and pairs their elements together. If the iterables are of different lengths, it fills…
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Python 101: 57 Built-in Functions
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Python 57 Built-in Functions Python 57 Built-in Functions Built-in Functions 内置函数 A abs() aiter() all() anext() any() ascii() B bin() bool() breakpoint() bytearray() bytes() C callable() chr() classmethod() compile() complex() D delattr() dict() dir() divmod() E enumerate() eval() exec() F filter() float() format() frozenset() G getattr() globals() H hasattr() hash()…
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Python 101: The Difference Between Two Function Definitions in Python
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Understanding the differences between two seemingly similar function definitions in Python is crucial for avoiding unintended side effects and understanding Python’s handling of default arguments. Function Definition 1 def f(a, L=None): if L is None: L = [] L.append(a) return L Function Definition 2 def f(a, L=[]): L.append(a) return L…
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Python 101: Exploring the Efficiency and Implementation of Python’s `enumerate()` Function
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The enumerate() function in Python is a built-in function that adds a counter to an iterable and returns it in the form of an enumerate object. This function is highly useful when you need to loop through an iterable and keep track of the index of each item. How enumerate()…
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Python 101: Understanding the Python `range()` Function
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The range() function in Python generates a sequence of numbers. It’s commonly used for looping a specific number of times in for loops. While the range() function appears straightforward, its implementation is a bit more complex. Here’s a detailed look at how the range() function is implemented and how it…
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Python 101: Understanding the Implementation of Python’s `match` Function
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Python’s match function is part of the re module, which provides support for regular expressions. The match function checks for a match only at the beginning of the string, while search checks for a match anywhere in the string. Here is a simplified explanation of how the match function works,…