##// END OF EJS Templates
ensure a fallback exists, so use local std{in,out,err}...
ensure a fallback exists, so use local std{in,out,err} Since IOStream instances require a valid fallback stream, use the locally defined std{in,out,err} instead of sys.std{in,out,err} in IOTerm's __init__ method. Note that the local std{in,out,err} are IOStream instances as well, that fall back to os.devnull

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macro.py
59 lines | 1.9 KiB | text/x-python | PythonLexer
"""Support for interactive macros in IPython"""
#*****************************************************************************
# Copyright (C) 2001-2005 Fernando Perez <fperez@colorado.edu>
#
# Distributed under the terms of the BSD License. The full license is in
# the file COPYING, distributed as part of this software.
#*****************************************************************************
import re
import sys
from IPython.utils import py3compat
coding_declaration = re.compile(r"#\s*coding[:=]\s*([-\w.]+)")
class Macro(object):
"""Simple class to store the value of macros as strings.
Macro is just a callable that executes a string of IPython
input when called.
Args to macro are available in _margv list if you need them.
"""
def __init__(self,code):
"""store the macro value, as a single string which can be executed"""
lines = []
enc = None
for line in code.splitlines():
coding_match = coding_declaration.match(line)
if coding_match:
enc = coding_match.group(1)
else:
lines.append(line)
code = "\n".join(lines)
if isinstance(code, bytes):
code = code.decode(enc or sys.getdefaultencoding())
self.value = code + '\n'
def __str__(self):
return py3compat.unicode_to_str(self.value)
def __unicode__(self):
return self.value
def __repr__(self):
return 'IPython.macro.Macro(%s)' % repr(self.value)
def __getstate__(self):
""" needed for safe pickling via %store """
return {'value': self.value}
def __add__(self, other):
if isinstance(other, Macro):
return Macro(self.value + other.value)
elif isinstance(other, basestring):
return Macro(self.value + other)
raise TypeError