How are scripts handled in Python?
Python prefers underscores Python packages and modules cannot use hyphens, only underscores. This section of PEP-8 gives us some guidance: Package and module names: Modules should have short, lowercase names. Underscores can be used in the module name if it improves readability.
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Are hyphens allowed in Python variables?
Answering your question, we can’t use hyphens for function and variable names because python uses hyphens as an arithmetic operator to perform subtraction.
Can keywords be used as variable names in Python?
Keywords are used to define the encoding syntax. The keyword cannot be used as an identifier, function, and variable name. All keywords in python are written in lowercase, except True and False.
Can variable names have a hyphen?
A variable is a parameter indicated by a name. You can access a hyphenated variable using an indirect reference. If your script depends on variable names having hyphens, it’s a programming error.
How to fix syntax error in Python 3?
File “”, line 39 prints “Columns of processed features ({} total features): {}”. format(len(X_all.columns), list(X_all.columns)) ^ SyntaxError: invalid syntax If you are using Python 3, then the parentheses in the print function are missing. The following code should work. Thanks for contributing an answer to Stack Overflow!
Why doesn’t Python allow the use of hyphens inside the function?
Because Python uses infix notation to represent calculations, and a hyphen and a minus sign have exactly the same ASCII code. There can be ambiguous cases like: What is the answer? 0 or 10?
Is it possible to handle invalid syntax in Python?
You can’t handle invalid syntax in Python like other exceptions. Even if you tried to wrap a try and except block around code with invalid syntax, you would still see the interpreter raise a SyntaxError.
What does it mean when you get SyntaxError in Python?
If the interpreter cannot correctly parse your Python code, it means that you used invalid syntax somewhere in your code. The interpreter will try to show you where that error occurred. When you’re first learning Python, it can be frustrating to get a SyntaxError.
Can you have a hyphen in a variable name?
A ‘word’ consisting only of letters, numbers, and underscores, and beginning with a letter or an underscore. The ‘names’ are used as shell variables and function names. Also known as an ‘identifier’. So you can’t use a hyphen in a name.
What is script in Python?
Because Python uses infix notation to represent calculations, and a hyphen and a minus sign have exactly the same ASCII code. You can have ambiguous cases like: ab = 10 a = 1 b = 1 c = ab.
Can Python variables be hyphenated?
That’s why Python doesn’t allow having hyphens. Because it will give you a syntax error if you do. In the first case, the interpreter throws an error because it won’t let you use an underscore in the variable, while in the second, it just executes l because you can use an underscore in your variable declaration.
What is __ import __?
python | __import__() function So we import those modules using one line of Python code. Python’s built-in __import__() function can be used. It also helps to import modules at runtime.
Can python variables be hyphenated?
How is a hyphen used in regular expressions?
In regular expressions, the hyphen (“-“) notation has a special meaning; indicates a range that would match any number from 0 to 9. As a result, you must escape the “-” character with a forward slash (“/”) when matching literal hyphens in a social security number.
Can bash variables have dots?
# As of Bash version 3, dots are not allowed inside variable names. Using a hyphen or other reserved characters in a variable name (or function name). var-1=23 # Use ‘var_1’ instead. # As of Bash version 3, periods are not allowed inside function names.