Python imp things

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 All built-in functions

https://docs.python.org/3/library/functions.html#eval

  • a // b = The integer part of the integer division of a by b

    • a ** b = Elevates a to the power of b. For non integer values of b, this becomes a root (i.e. a**(1/2) is the square root of a)

Character

Meaning

'r'

open for reading (default)

'w'

open for writing, truncating the file first

'x'

open for exclusive creation, failing if the file already exists

'a'

open for writing, appending to the end of file if it exists

'b'

binary mode

't'

text mode (default)

'+'

open for updating (reading and writing)

The default mode is 'r' (open for reading text, a synonym of 'rt'). Modes 'w+' and 'w+b' open and truncate the file. Modes 'r+' and 'r+b' open the file with no truncation.

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