csv: reader allows escapechar=1 #8284

Python 3.14.6 (v3.14.6:c63aec69bd5, Jun 10 2026, 08:07:54) [Clang 21.0.0 (clang-2100.1.1.101)] on darwin
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>>> import csv
>>> import io
>>> buf = io.StringIO()
>>> csv.reader(buf,escapechar=1)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
    csv.reader(buf,escapechar=1)
    ~~~~~~~~~~^^^^^^^^^^^^^^^^^^
TypeError: "escapechar" must be a unicode character or None, not int

>>>>> import io
>>>>> buf = io.StringIO()
>>>>> csv.reader(buf,escapechar=1)
<_csv.reader object at 0x9476eea80>