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安裝中文字典英文字典辭典工具!
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- What does colon equal (:=) in Python mean? - Stack Overflow
In Python this is simply = To translate this pseudocode into Python you would need to know the data structures being referenced, and a bit more of the algorithm implementation Some notes about psuedocode: := is the assignment operator or = in Python = is the equality operator or == in Python There are certain styles, and your mileage may vary:
- What is Pythons equivalent of (logical-and) in an if-statement?
There is no bitwise negation in Python (just the bitwise inverse operator ~ - but that is not equivalent to not) See also 6 6 Unary arithmetic and bitwise binary operations and 6 7 Binary arithmetic operations The logical operators (like in many other languages) have the advantage that these are short-circuited That means if the first operand already defines the result, then the second
- slice - How slicing in Python works - Stack Overflow
Python slicing is a computationally fast way to methodically access parts of your data In my opinion, to be even an intermediate Python programmer, it's one aspect of the language that it is necessary to be familiar with
- Does Python have a ternary conditional operator?
214 From the documentation: Conditional expressions (sometimes called a “ternary operator”) have the lowest priority of all Python operations The expression x if C else y first evaluates the condition, C (not x); if C is true, x is evaluated and its value is returned; otherwise, y is evaluated and its value is returned
- What does [:-1] mean do in python? - Stack Overflow
Working on a python assignment and was curious as to what [:-1] means in the context of the following code: instructions = f readline()[:-1] Have searched on here on S O and on Google but to no avail
- python - SSL: CERTIFICATE_VERIFY_FAILED with Python3 - Stack Overflow
Go to the folder where Python is installed, e g , in my case (Mac OS) it is installed in the Applications folder with the folder name 'Python 3 6' Now double click on 'Install Certificates command'
- How do I declare custom exceptions in modern Python?
By "modern Python" I mean something that will run in Python 2 5 but be 'correct' for the Python 2 6 and Python 3 * way of doing things And by "custom" I mean an Exception object that can include extra data about the cause of the error: a string, maybe also some other arbitrary object relevant to the exception
- python - How to concatenate (join) items in a list to a single string . . .
For handling a few strings in separate variables, see How do I append one string to another in Python? For the opposite process - creating a list from a string - see How do I split a string into a list of characters? or How do I split a string into a list of words? as appropriate
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