A function in Python is a block of reusable code that performs a specific task. In Python, functions are defined using the “def” keyword, followed by the function name, and a set of parentheses that may include parameters. The function body is indented and contains the code that performs ...
In a few words the with statement allows you to executed code before and/or after a specific set of operations. For example if you open a file for reading and parsing no matter what happens during the parsing you want to be sure that at the end the file is closed. This is normally a...
= -1: in_money = eval(currency_str_value[0:-3]) # 使用lambda定义函数convert_currency2 = lambda x: x * exchange_rate # 调用lambda函数out_money = convert_currency2(in_money) print('转换后的金额是:{} {} '.format(out_money, string)) else: print('无法计算') Get_huilv(url, header...
In this article, you’ve learned different types of standard tools to supercharge your coding interview skills: Powerful built-in functions Data structures built to handle common scenarios with barely any code Standard library packages that have feature-rich solutions for specific problems, letting you...
You can then ask questions such as "Does this string match the pattern?", or "Is there a match for the pattern anywhere in this string?". You can also use REs to modify a string or to split it apart in various ways. Regular expression patterns are compiled into a series of bytecode...
Assuming that the candidate does mention unittest (if they don’t, you may just want to end the interview right then and there!), you should also ask them to describe the key elements of the unittest framework; namely, test fixtures, test cases, test suites and test runners. ...
Ask how the code could be optimized and what the resulting time and space complexity would be. If a candidate has solved a coding challenge, ask them to analyze their code to see if it could be written with a more optimized algorithm. Python experts will also have experience optimizing code...
Katrina:I had to talk about my code. When you’re self-taught, you don’t get a lot of opportunities to talk through your code. Through the conversations I had at PyCon, I was encouraged to be more deliberate about taking advantage of my Slack and local Python communities to practice ...
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