Merge pull request #6696 from ales-erjavec/fixes/owcsvimport-pandas-dev

[FIX] CSV Import: Add explicit datetime conversion

Orange/widgets/data/owcsvimport.py

@@ -1532,11 +1532,6 @@ def expand(ranges):
         numbers_format_kwds["thousands"] = opts.group_separator
 
     if numbers_format_kwds:
-        # float_precision = "round_trip" cannot handle non c-locale decimal and
-        # thousands sep (https://github.com/pandas-dev/pandas/issues/35365).
-        # Fallback to 'high'.
-        numbers_format_kwds["float_precision"] = "high"
-    else:
         numbers_format_kwds["float_precision"] = "round_trip"
 
     with ExitStack() as stack:
@@ -1559,7 +1554,12 @@ def expand(ranges):
             na_values=na_values, keep_default_na=False,
             **numbers_format_kwds
         )
-
+        if parse_dates:
+            for date_col in parse_dates:
+                if df.dtypes[date_col] == "object":
+                    df[df.columns[date_col]] = pd.to_datetime(
+                        df.iloc[:, date_col], errors="coerce"
+                    )
         if prefix:
             df.columns = [f"{prefix}{column}" for column in df.columns]