>>> import struct
>>> struct.pack(">Q", -1)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
struct.error: int too large to convert

import struct
for endianness in "<>":
    for size in "BHILQ":
        try:
            fmt = endianness + size
            struct.pack(fmt, -1)
        except struct.error as e:
            print("Error msg of " + fmt + ":", e)

Error msg of <B: ubyte format requires 0 <= number <= 255
Error msg of <H: ushort format requires 0 <= number <= 65535
Error msg of <I: argument out of range
Error msg of <L: argument out of range
Error msg of <Q: argument out of range
Error msg of >B: ubyte format requires 0 <= number <= 255
Error msg of >H: argument out of range
Error msg of >I: argument out of range
Error msg of >L: argument out of range
Error msg of >Q: int too large to convert