The 's' replaces a single Place match at a time although the 's+' replaces The full Place sequence directly with the next parameter.
In such a case, it helps make no difference, since you are replacing all the things with the vacant string (Whilst it would be greater to use s+ from an efficiency perspective). When you were replacing by using a non-vacant string, The 2 would behave otherwise. Share Improve this solution Stick to
How can it be made a decision that a candidate has gained a point out While not each of the votes have been described?
Utilizing %s in scanf devoid of an explcit industry width opens the exact same buffer overflow exploit that gets did; namely, if there are actually a lot more figures during the enter stream compared to focus on buffer is sized to carry, scanf will Fortunately write Individuals further figures to memory outdoors the buffer, perhaps clobbering a little something essential. Regrettably, not like in printf, You cannot offer the sector with being a run time argument:
That is pretty typical mistake-checking code for the 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 straight following one another s+ normally takes that group and turns The complete it into a "", whilst s would proces every House on its own.
The %s token enables me to insert (and probably format) a string. Recognize the %s token is replaced by no matter what I pass for 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 greater strong str.format process.
Detect also that i'm using a tuple below as well (if you have only 1 string utilizing a tuple is optional) For example that numerous strings might be inserted and formatted in a single assertion.
The width is not really laid out in the format string, but as an additional integer benefit argument preceding the argument that must be formatted.
If the worth to get output is under four character positions extensive, the value is correct justified in the field by default.
If the value is larger than four character positions vast, the sphere width expands to support the appropriate amount of characters.
Another if assertion checks to find out In the event the 'database-title' here you passed to the script basically exists to the filesystem. If not, you will get a concept similar to this: