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Diffstat (limited to 'Doc/whatsnew/3.1.rst')
| -rw-r--r-- | Doc/whatsnew/3.1.rst | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/Doc/whatsnew/3.1.rst b/Doc/whatsnew/3.1.rst index f4ffd76..4fb2a59 100644 --- a/Doc/whatsnew/3.1.rst +++ b/Doc/whatsnew/3.1.rst @@ -228,7 +228,18 @@ New, Improved, and Deprecated Modules *rename* which lets invalid fieldnames be automatically converted to positional names in the form _0, _1, etc. This is useful when the field names are being created by an external source such as a - CSV header, SQL field list, or user input. + CSV header, SQL field list, or user input:: + + >>> query = input('Enter a query: ') + Enter a query: SELECT region, dept, count(*) FROM main GROUPBY region, dept + + >>> cursor.execute(query) + >>> query_fields = [desc[0] for desc in cursor.description] + >>> UserQuery = namedtuple('UserQuery', query_fields, rename=True) + >>> pprint.pprint([UserQuery(*row) for row in cursor]) + [UserQuery(region='South', dept='Shipping', _2=185), + UserQuery(region='North', dept='Accounting', _2=37), + UserQuery(region='West', dept='Sales', _2=419)] (Contributed by Raymond Hettinger; :issue:`1818`.) |