Converting Base10 integer to Base64 representation in Python

Question

So this is my code, which throws a MemoryError at line 2 with no other details.

import base64
b = bytes(2108292477256562115)
print(base64.urlsafe_b64encode(b))

b = b'2108292477256562115' or b = str(n).encode().

ekhumoro
– ekhumoro

2019-08-11 19:52:39 +00:00
Commented Aug 11, 2019 at 19:52 — ekhumoro
– ekhumoro, Commented Aug 11, 2019 at 19:52

Ry- · Accepted Answer · 2019-08-11 19:15:54Z

1

bytes(2108292477256562115) is a byte string with length 2108292477256562115. If you want to convert that integer to a minimal number of bytes, you need to get the number of bytes required to represent it first:

n = 2108292477256562115
byte_length = (n.bit_length() + 7) // 8

then convert:

n.to_bytes(byte_length, 'big')

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