As reported by the NOAD, the meaning of comment out is (computing) turn part of a program into a comment so that the computer ignores it when running the program. You could try commenting out that line. … To disable lines of code in a program by surrounding them with comment-start and comment-stop characters.
Similarly, What is comment out in Python?
Comments in Python begin with a hash mark ( # ) and whitespace character and continue to the end of the line. … Because comments do not execute, when you run a program you will not see any indication of the comment there. Comments are in the source code for humans to read, not for computers to execute.
Additionally, Why is it bad to comment out code? Having commented out code stops the flow of your eyes as you go down the code – there is a distraction and you want to know what it is. Even more time is then wasted trying to work out why the code was commented out and whether it might still be useful or not.
Should I comment every line of code?
You should write a comment on every line of code.
Does commented out code affect performance?
Commenting will not affect the script execution time in normal case. But the number of lines you write in your code affect the parser to read and buffer it considerably.
How do you comment out code in Python?
A comment in Python starts with the hash character, # , and extends to the end of the physical line. A hash character within a string value is not seen as a comment, though. To be precise, a comment can be written in three ways – entirely on its own line, next to a statement of code, and as a multi-line comment block.
What is comment in Python with example?
A Python comment is a line of text in a program that is not executed by the interpreter. Comments are used during debugging to identify issues and to explain code. Comments start with a hash character (#).
What is the shortcut to comment out in Python?
To comment out a block of code in IDLE, we have to first select the line and then press the key combination ctrl+D. This will comment out the selected lines of code as shown below. To uncomment the lines of code, we just have to select the lines and then press ctrl+shift+d . This will uncomment the selected lines.
Is it bad to comment out code practice?
Commenting code is on the generally-recognized list of code smells. But unlike most of the others on the list, comments are not always bad. Generally speaking, you should strive to minimize comments and let the code speak for itself, but it is just as important to include comments when the code cannot.
Should you keep commented code?
In reality, commented code is harmless. The problem is that it’s messy and makes it difficult to read. There are far worse sins but it’s a very simple thing to eliminate. As the person who commented out the code, you are in the best position to determine that it can be completely removed.
Should we keep commented code?
Commenting out code has its place, but that place is quickie tests that aren’t even worth the time to do a branch. If the code is worth keeping, it’s worth more than being lost in a comment somewhere. If it is not worth keeping, kill it with fire.
Should you add comments to your code?
A handy rule of thumb is: a comment should only be added to answer a question that the code can’t. If you aren’t confused by what a piece of code is doing, but rather why it’s doing it at that moment, then a comment should be added.
Should you comment every method?
Every class and method should be preceded with a descriptive comment using the “JavaDoc” notational convention. … In the method, the comment should describe its purpose, comment all arguments, the return value, and any exceptions using JavaDoc keywords.
How do you comment effectively in code?
13 Tips to Comment Your Code
- Comment each level. Comment each code block, using a uniform approach for each level. …
- Use paragraph comments. …
- Align comments in consecutive lines. …
- Don’t insult the reader’s intelligence. …
- Be polite. …
- Get to the point. …
- Use a consistent style. …
- Use special tags for internal use.
Can comments slow down code?
Comments are stripped from the compiled code, they can not slow down your compiled program.
Should you commit commented out code?
You should never commit commented-out code. That’s what version control is for. If you need that code back, just fetch it from the repo.
Does commented code affect performance Python?
And Python does exactly that. We could say that the code and the comments, in the form you wrote them, are simply not present, when the program is running. So no, comments do not slow down the programs at run-time.
How do you comment multiple lines in Python?
To write multiline comments in Python, prepend a # to each line to block comment. That means write Consecutive Single-line Comments. Start every line with # sign consecutively, and you will achieve multi-line comments.
How do you comment out a block in Python?
AFAIK, Python doesn’t have block comments. For commenting individual lines, you
can use the # character
.
…
- Then, you can use r’raw string’ — r’xor’ == ‘\xor’ . …
- Well, any “true” multi-line comment must also be parsed and syntactically valid.
How do you comment out a block of code?
To comment a block:
- Select the required block of code.
- Press Ctrl + Shift + / The beginning (/*) and ending (*/) characters will be added in the appropriate places in order to mark the selected block as a comment.
What are Python comments give suitable example of Python comments?
Single-Line Comments in Python
- # printing a string print(‘Hello world’)
- print(‘Hello world’) #printing a string.
- ”’ I am a multiline comment! ”’ print(“Hello World”)
What are comments how comments are specified in Python give example?
A comment in Python starts with the hash character, # , and extends to the end of the physical line. A hash character within a string value is not seen as a comment, though. To be precise, a comment can be written in three ways – entirely on its own line, next to a statement of code, and as a multi-line comment block.
What are comments and its types in Python?
Python provides three kinds of comments including block comment, inline comment, and documentation string.