The 's' replaces one space match at any given time but the 's+' replaces The entire Area sequence at the same time with the second parameter.
In cases like this, it makes no variance, because you are replacing almost everything having an empty string (Despite the fact that It will be much better to implement s+ from an performance standpoint). In the event you have been changing with a non-empty string, The 2 would behave in a different way. Share Boost this remedy Abide by
How can it be resolved that a candidate has gained a point out Though not all the votes are noted?
Applying %s in scanf without having an explcit industry width opens the identical buffer overflow exploit that will get did; specifically, if you will find far more people in the input stream as opposed to focus on buffer is sized to carry, scanf will Fortunately generate These added figures to memory exterior the buffer, most likely clobbering one thing critical. Sad to say, compared with in printf, You can not offer the sector with being a run time argument:
This can be quite normal 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. In case you would have a gaggle of (for example) 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 that the %s token is replaced by what ever I pass towards the string after the % image.
Andrew HareAndrew Hare 351k7575 gold badges645645 silver badges641641 bronze badges three 15 Note that this type of string interpolation is deprecated in favor of the more potent str.structure strategy.
Detect more info also that i'm using a tuple below as well (if you have only one string using a tuple is optional) As an instance that multiple strings could be inserted and formatted in a single assertion.
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If the worth to get output is lower than four character positions extensive, the worth is correct justified in the sphere by default.
If the worth is greater than 4 character positions large, the field width expands to accommodate the right quantity of figures.
The following if statement checks to check out Should the 'databases-name' you handed for the script truly exists around the filesystem. Otherwise, you'll get a information such as this: