Python scripting
Available from version v 6.2
Summary
This operator behaves like Python scripting - with input table, but it cannot have an input table from the current data node. It can only be used as the first operation in a data node without a parent node.
It accepts the functions run, and create_table. It does not accept main and simple_main.
All other settings are the same as in Python scripting - with input table.
Examples
Task | Import a CSV file |
|---|---|
Settings |
create_table_from_csv.py async def create_table(parameters, types, columns, files): is_first = True textreader = files.i[0].textreader(newline='\n') async for l in textreader: if is_first: headers = [v.strip(' "\n') for v in l.split(',')] for col_idx, h in enumerate(headers): columns[h] = col_idx is_first = False else: fields = [v.strip(' "\n') for v in l.split(',')] if [ f for f in fields if f ]: yield fields |
Input File | |
Result |  |
Task | Define a data node start table schema |
|---|---|
Settings |
create_table_from_python.py def create_table(params, types, columns, files): types[0] = int types[1] = str types[2] = datetime.datetime types[3] = float types[4] = bool columns['Integer Column'] = 0 columns['String Column'] = 1 columns['DateTime Column'] = 2 columns['Float Column'] = 3 columns['Boolean Column'] = 4 return [] |
Result |
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