Add --header

Author: akb

README.rst

@@ -535,25 +535,57 @@ try:
 
 .. code-block:: toml
 
+    base_exec_before = '''
+    import csv
+    import typing as t
+
+
+    def read_csv(
+        file, header: bool, **kwargs
+    ) -> t.Iterable[t.Dict[t.Union[str, int], str]]:
+        "Read csv rows into an iterable of dicts."
+
+        rows = list(file)
+
+        first_row = next(csv.reader(rows))
+        if header:
+            fieldnames = first_row
+            reader = csv.DictReader(rows, fieldnames=fieldnames, **kwargs)
+            return list(reader)[1:]
+
+        fieldnames = range(len(first_row))
+        return csv.DictReader(rows, fieldnames=fieldnames, **kwargs)
+
+    '''
+
+
+
+
     [[alias]]
         name = "csv"
         short_help = "Load csv rows into python objects"
-        inject_values=["delimiter"]
+        inject_values=["delimiter", "header"]
 
         [[alias.options]]
         name = "--delimiter"
         default = ","
+        help = "field delimiter character"
+
+        [[alias.options]]
+        name = "--header/--no-header"
+        default=true
+        help = "Treat the first row as a header?"
 
         [[alias.stage]]
         command = "apply"
-        options = {code="csv.DictReader(x, delimiter=delimiter)"}
+        options = {code="read_csv(x, header=header)"}
 
         [[alias.stage]]
         command = "chain"
 
         [[alias.stage]]
         command = "map"
-        options = {code="dict"}
+        options = {code="dict(x)"}