id,node_id,number,title,user,state,locked,assignee,milestone,comments,created_at,updated_at,closed_at,author_association,pull_request,body,repo,type,active_lock_reason,performed_via_github_app,reactions,draft,state_reason
1279144769,I_kwDOCGYnMM5MPjNB,448,Reading rows from a file => AttributeError: '_io.StringIO' object has no attribute 'readinto',236907,closed,0,,,5,2022-06-21T21:48:27Z,2023-05-08T22:01:00Z,2023-05-08T22:01:00Z,NONE,,"Attempting to run the example given here (without extra bracket ;-):
https://sqlite-utils.datasette.io/en/stable/python-api.html#reading-rows-from-a-file
```
from sqlite_utils.utils import rows_from_file
import io

rows, format = rows_from_file(io.StringIO(""id,name\n1,Cleo""))
print(list(rows), format)
# Outputs [{'id': '1', 'name': 'Cleo'}] Format.CSV
```

Gives error
```
>""c:\Program Files\Python37\python.exe"" test2.py
Traceback (most recent call last):
  File ""test2.py"", line 4, in <module>
    rows, format = rows_from_file(io.StringIO(""id,name\n1,Cleo""))
  File ""C:\Users\swood\Downloads\sqlite-utils-main-20220621\sqlite-utils-main\sqlite_utils\utils.py"", line 300, in rows_from_file
    first_bytes = buffered.peek(2048).strip()
AttributeError: '_io.StringIO' object has no attribute 'readinto'
```

I am running Python on Windows.
```
>""c:\Program Files\Python37\python.exe""
Python 3.7.4 (tags/v3.7.4:e09359112e, Jul  8 2019, 20:34:20) [MSC v.1916 64 bit (AMD64)] on win32
Type ""help"", ""copyright"", ""credits"" or ""license"" for more information.
```",140912432,issue,,,"{""url"": ""https://api.github.com/repos/simonw/sqlite-utils/issues/448/reactions"", ""total_count"": 1, ""+1"": 1, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,completed
1465194249,I_kwDOCGYnMM5XVRcJ,514,upsert of new row with check constraints fails,193185,closed,0,,,5,2022-11-26T16:12:23Z,2023-05-08T21:50:52Z,2023-05-08T21:50:51Z,NONE,,"(I originally opened this in https://github.com/simonw/datasette-insert/issues/20, but I see that that library depends on sqlite-utils)

In the case of a new row, upsert first adds the row, specifying only its pkeys: https://github.com/simonw/sqlite-utils/blob/965ca0d5f5bffe06cc02cd7741344d1ddddf9d56/sqlite_utils/db.py#L2783-L2787

This means that a table with NON NULL (or other constraint) columns that aren't part of the pkey can't have new rows upserted.",140912432,issue,,,"{""url"": ""https://api.github.com/repos/simonw/sqlite-utils/issues/514/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,completed