Ray Ray - 1 year ago 190
Python Question

TypeError: 'bytes' object is not callable


I made the very trivial mistake of having bound
to something else previous to executing the following code. This question is now entirely trivial and probably doesn't help anyone. Sorry.

Original question:


import sys
b = bytes([10, 20, 30, 40])


3.5.1 (v3.5.1:37a07cee5969, Dec 5 2015, 21:12:44)
[GCC 4.2.1 (Apple Inc. build 5666) (dot 3)]
TypeError Traceback (most recent call last)
<ipython-input-38-21fec5626bc3> in <module>()
1 import sys
2 print(sys.version)
----> 3 b = bytes([10, 20, 30, 40])
4 print(b)

TypeError: 'bytes' object is not callable


Type: bytes
String form: b'hello world'
Length: 11
bytes(iterable_of_ints) -> bytes
bytes(string, encoding[, errors]) -> bytes
bytes(bytes_or_buffer) -> immutable copy of bytes_or_buffer
bytes(int) -> bytes object of size given by the parameter initialized with null bytes
bytes() -> empty bytes object

Construct an immutable array of bytes from:
- an iterable yielding integers in range(256)
- a text string encoded using the specified encoding
- any object implementing the buffer API.
- an integer

What am I doing wrong?

Answer Source

You have assigned a bytes value to the name bytes:

>>> bytes([10, 20, 30, 40])
>>> bytes = bytes([10, 20, 30, 40])
>>> bytes([10, 20, 30, 40])
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: 'bytes' object is not callable

bytes is now bound to the value b'\n\x14\x1e(', which is not callable. This global is shadowing the built-in. Delete it:

del bytes

to reveal the built-in again.

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