MemoryError

[micseydel]

I can't reproduce your issue:

Error:
  File "testit.py", line 7
    function = ((2499-Speed)/357)*((-1,75*10**-8)*Head**4+(1,21*10**-4)*Head**3-(3,1*10**-1)*Head**2+(3,53*10**2)*Head-1,49*10**5)+((Speed-2142)/357)*((-2,87*10**-9)*Head**4 +(2,58*10**-5)*Head**3-(8,71*10**-2)*Head**2+(1,3*10**2)*Head-7,03*10**4)
                                                                                                                                                                                                                                               ^
SyntaxError: invalid token

That said, I would have had to guess a speed and head. Can you please provide simpler code without input() (just hard-coded values which reproduce the issue) and verify that the code you've posted produces a particular error? Also, you should provide the full error message, not just "MemoryError" (if your IDE does not provide this, use a terminal to get it). I expect that you should be able to post five or fewer lines to reproduce this issue, no need to provide 4 similar lines.

Other than that, what type are you expecting function to be?