create dynamic strings

[jedie]

https://docs.micropython.org/en/latest/ ... d.html#ram says:

The best way to create dynamic strings is by means of the string format() method:

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var = "Temperature {:5.2f} Pressure {:06d}\n".format(temp, press)

What's about the old school %-formatter method? Is the RAM allocation the same?!?

[Roberthh]

Probably yes. Both the format string and the generated target need RAM.

[jimmo]

Definitely yes. They work in the same way, by appending to a vstr which grows as the string is generated.

The reason that ''.format() is preferred over % is that not all ports of MicroPython have % enabled.

[jedie]

The reason that ''.format() is preferred over % is that not all ports of MicroPython have % enabled.

Oh, interesting. Then it is probably best to prefer .format().

[jedie]

What's about this:

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print('Some Text:', variable)

I don't think this should be an unnecessary waste of RAM either, is it?

[jimmo]

That's right, this doesn't require any allocations -- it just prints the strings directly.