I missed somthing… I don’t know how and why to use the “%”, I did the Linux for begginers and now I am on Python for Robotics and I have seen usage of “%d” and “%f”. Help me to find out what I missed please <3
What did I miss with the usage of "%" when printing data in python
Welcome to our community.
%d, %f, and %s are used to print integer, float, and string variables respectively.
If you write:
print("The value is X and I love it..")
Python (and other programming languages) need to know how to override X with something. If you just write “s”, python would print only the letter “s” instead of the value of the variable that you want to print.
By putting %s, python will know that in that place it has to be put the value of a variable.
That is why you have:
variable = 'The Construct' print("I love %s." % variable)
which results in: I love The Construct.
variable = 'The Construct' print("I love s." % variable)
which would result in:
I love s.
Thank you verry much !
I still did not understand why and when to use %d and %f ?
Sorry for newbe…
yes, it’s not really clear, but “d” is for “digit”, “f” for “float”, etc.
You can use what I extracted from here and pasted below:
Here are some commonly used conversion specifiers (not a comprehensive list):
%d int (signed decimal integer) %u unsigned decimal integer %f floating point values (fixed notation) - float, double %e floating point values (exponential notation) %s string %c character
For python language, you can always use “%s” if you are not sure because printing any value as “string” will always work. If you try to print a string value using “%f” for float, you would have an error. But printing a float number with “%s” will always work.