安裝中文字典英文字典辭典工具!
安裝中文字典英文字典辭典工具!
|
- python - What is the purpose of the -m switch? - Stack Overflow
Python 2 4 adds the command line switch -m to allow modules to be located using the Python module namespace for execution as scripts The motivating examples were standard library modules such as pdb and profile, and the Python 2 4 implementation is fine for this limited purpose
- 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
- Is there a not equal operator in Python? - Stack Overflow
There's the != (not equal) operator that returns True when two values differ, though be careful with the types because "1" != 1 This will always return True and "1" == 1 will always return False, since the types differ Python is dynamically, but strongly typed, and other statically typed languages would complain about comparing different types There's also the else clause:
- Using or in an if statement (Python) - Stack Overflow
Using 'or' in an 'if' statement (Python) [duplicate] Asked 7 years, 10 months ago Modified 2 months ago Viewed 161k times
- 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 - Iterating over a dictionary using a for loop, getting keys . . .
Why is it 'better' to use my_dict keys() over iterating directly over the dictionary? Iteration over a dictionary is clearly documented as yielding keys It appears you had Python 2 in mind when you answered this, because in Python 3 for key in my_dict keys() will still have the same problem with changing the dictionary size during iteration
- python - How do I list all files of a directory? - Stack Overflow
How can I list all files of a directory in Python and add them to a list?
|
|
|