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Which pitfalls should be avoided in learning Python?

2025-02-24 Update From: SLTechnology News&Howtos shulou NAV: SLTechnology News&Howtos > Internet Technology >

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In order to solve this problem, this article introduces the corresponding analysis and solution in detail, hoping to help more partners who want to solve this problem to find a more simple and feasible way.

Which pitfalls should be avoided in learning Python? How to get started with Python with Zero Foundation? Python has the advantages of simple introduction, concise syntax and powerful function, so it is very suitable for people in the zero-basic entry IT industry to learn. With the advent of the era of artificial intelligence, enterprises have chosen to use Python for development, and the needs and salaries and benefits of Python employees are also increasing. Many people choose to learn Python, but zero basic Python must avoid jumping into these holes!

1. Wrong use of variables. In Python, each variable must be assigned before it is used, and the variable will not be created until the variable is assigned. Class variables are processed internally as dictionaries and follow the method parsing order (MRO).

2. Abuse the expression as the default value of the function parameter. Python allows developers to specify a default value for function parameters, which is a feature of the language, but it can easily lead to confusion when the parameters are variable.

3. Misunderstand the scope of Python rules. The scope resolution of Python is based on LEGB rules, which are Local, Enclosing, Global and Built-in, respectively.

Python learns q-u-n 784, 758, 214 tools and shares all kinds of practical operations.

4. Create circular module dependencies. The mere existence of a circular import is not a problem with Python itself, and if a module is imported, Python will not try to re-import. According to this, each module may encounter some problems at run time when trying to access functions or variables.

5. Specify incorrect parameters for the exception. The correct way to catch multiple exceptions in an exception statement is to specify the first parameter as a tuple that contains all the caught exceptions. At the same time, use the as keyword for maximum portability, which is supported by both Python 2 and Python 3.

6. Conflict with the name of Python standard library module. Python has a very rich module library and supports "out of the box". Therefore, naming conflicts can easily occur if you do not deliberately avoid them. For example, you may have an email.py module in your code, which is likely to conflict with the standard library module that comes with Python because of the same name.

7. Error in coding details. For example, forget to add ":" after if, elif, else, for, while, class, def statements, misuse "=" to make equivalent comparison, use wrong indentation, do not define variables, connect strings with non-strings, modify strings, get the index position of list elements and forget to call the len method, and so on.

The syntax format of Python is easier to understand than other languages, rich and powerful libraries and many mechanisms and patterns can greatly improve the efficiency of development. Zero basic Python must follow its rules when coding, pay attention to detail, and do not write Python code in accordance with the inherent thinking and syntax format.

This is the answer to the question about which holes to avoid in learning Python. I hope the above content can be of some help to you. If you still have a lot of doubts to be solved, you can follow the industry information channel to learn more about it.

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