def _writetext(table, f, prologue, template, epilogue):
if prologue is not None:
f.write(prologue)
it = iter(table)
flds = it.next()
for row in it:
rec = asdict(flds, row)
s = template.format(**rec)
f.write(s)
if epilogue is not None:
f.write(epilogue)
def appendtext(table, source=None, template=None, prologue=None, epilogue=None):
"""
As :func:`totext` but the file is opened in append mode.
"""
source = _write_source_from_arg(source)
with source.open_('ab') as f:
if prologue is not None:
f.write(prologue)
it = iter(table)
flds = it.next()
for row in it:
rec = asdict(flds, row)
s = template.format(**rec)
f.write(s)
if epilogue is not None:
f.write(epilogue)
def totext(table, source=None, template=None, prologue=None, epilogue=None):
"""
Write the table to a text file. E.g.::
>>> from petl import totext, look
>>> look(table)
+-------+-------+
| 'foo' | 'bar' |
+=======+=======+
| 'a' | 1 |
+-------+-------+
| 'b' | 2 |
+-------+-------+
| 'c' | 2 |
+-------+-------+
>>> prologue = \"\"\"{| class="wikitable"
... |-
... ! foo
... ! bar
... \"\"\"
>>> template = \"\"\"|-
... | {foo}
... | {bar}
... \"\"\"
>>> epilogue = "|}"
>>> totext(table, 'test.txt', template, prologue, epilogue)
>>>
>>> # see what we did
... with open('test.txt') as f:
... print f.read()
...
{| class="wikitable"
|-
! foo
! bar
|-
| a
| 1
|-
| b
| 2
|-
| c
| 2
|}
The `template` will be used to format each row via `str.format <http://docs.python.org/library/stdtypes.html#str.format>`_.
"""
source = _write_source_from_arg(source)
with source.open_('wb') as f:
if prologue is not None:
f.write(prologue)
it = iter(table)
flds = it.next()
for row in it:
rec = asdict(flds, row)
s = template.format(**rec)
f.write(s)
if epilogue is not None:
f.write(epilogue)