* Triggers fprintf to pad the output until eventually it is actually n figures extensive, the place n is undoubtedly an integer worth saved during the a purpose argument just preceding that represented from the modified type.

In such cases, it tends to make no change, since you are replacing anything with the empty string (Whilst it would be greater to use s+ from an efficiency perspective). When you were replacing using a non-empty string, the two would behave in different ways. Share Strengthen this answer Stick to

so "indent" specifies the amount of Area to allocate for the string that follows it in the parameter listing.

This is particularly critical for customers of our Neighborhood who're novices, and never knowledgeable about the syntax. Given that, can you edit your answer to incorporate a proof of Everything you're performing and why you believe it is the greatest strategy?

This is rather regular mistake-examining code to get a Python script that accepts command-line arguments.

The real difference lies in the best way it get's dealt with. Should you would have a gaggle of (such as) three spaces directly following one another s+ can take that group and turns The complete it right into a "", although s would proces each space By itself.

 

The %s token will allow me to insert (and potentially format) a string. Notice that the %s token is changed by whatever I pass to the string after the % image.

Andrew HareAndrew Hare 351k7575 gold badges645645 silver badges641641 bronze badges 3 fifteen Notice that this kind of string interpolation is deprecated in favor of the here greater highly effective str.format method.

Notice also that I am utilizing a tuple here at the same time (when you only have just one string employing a tuple is optional) For instance that many strings can be inserted and formatted in one statement.

The width is not laid out in the format string, but as an extra integer value argument previous the argument that needs to be formatted.

If the value to generally be output is a lot less than four character positions extensive, the worth is correct justified in the field by default.

If the worth is greater than 4 character positions large, the field width expands to support the right variety of people.

So the main if assertion interprets to: for those who have not handed me an argument, I will inform you how you'll want to go me an argument Down the road, e.g. you will see this on-display screen: