/
current.py
213 lines (162 loc) · 5.92 KB
/
current.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
"""The official API for working with notebooks in the current format version.
Authors:
* Brian Granger
* Jonathan Frederic
"""
#-----------------------------------------------------------------------------
# Copyright (C) 2008-2011 The IPython Development Team
#
# Distributed under the terms of the BSD License. The full license is in
# the file COPYING, distributed as part of this software.
#-----------------------------------------------------------------------------
#-----------------------------------------------------------------------------
# Imports
#-----------------------------------------------------------------------------
from __future__ import print_function
from xml.etree import ElementTree as ET
import re
from IPython.utils.py3compat import unicode_type
from IPython.nbformat.v3 import (
NotebookNode,
new_code_cell, new_text_cell, new_notebook, new_output, new_worksheet,
parse_filename, new_metadata, new_author, new_heading_cell, nbformat,
nbformat_minor, to_notebook_json
)
from IPython.nbformat import v3 as _v_latest
from .reader import reads as reader_reads
from .reader import versions
from .convert import convert
#-----------------------------------------------------------------------------
# Code
#-----------------------------------------------------------------------------
current_nbformat = nbformat
current_nbformat_minor = nbformat_minor
current_nbformat_module = _v_latest.__name__
def docstring_nbformat_mod(func):
"""Decorator for docstrings referring to classes/functions accessed through
nbformat.current.
Put {nbformat_mod} in the docstring in place of 'IPython.nbformat.v3'.
"""
func.__doc__ = func.__doc__.format(nbformat_mod=current_nbformat_module)
return func
class NBFormatError(ValueError):
pass
def parse_py(s, **kwargs):
"""Parse a string into a (nbformat, string) tuple."""
nbf = current_nbformat
nbm = current_nbformat_minor
pattern = r'# <nbformat>(?P<nbformat>\d+[\.\d+]*)</nbformat>'
m = re.search(pattern,s)
if m is not None:
digits = m.group('nbformat').split('.')
nbf = int(digits[0])
if len(digits) > 1:
nbm = int(digits[1])
return nbf, nbm, s
def reads_json(s, **kwargs):
"""Read a JSON notebook from a string and return the NotebookNode object."""
return convert(reader_reads(s), current_nbformat)
def writes_json(nb, **kwargs):
return versions[current_nbformat].writes_json(nb, **kwargs)
def reads_py(s, **kwargs):
"""Read a .py notebook from a string and return the NotebookNode object."""
nbf, nbm, s = parse_py(s, **kwargs)
if nbf in (2, 3):
nb = versions[nbf].to_notebook_py(s, **kwargs)
else:
raise NBFormatError('Unsupported PY nbformat version: %i' % nbf)
return nb
def writes_py(nb, **kwargs):
# nbformat 3 is the latest format that supports py
return versions[3].writes_py(nb, **kwargs)
# High level API
def reads(s, format, **kwargs):
"""Read a notebook from a string and return the NotebookNode object.
This function properly handles notebooks of any version. The notebook
returned will always be in the current version's format.
Parameters
----------
s : unicode
The raw unicode string to read the notebook from.
format : (u'json', u'ipynb', u'py')
The format that the string is in.
Returns
-------
nb : NotebookNode
The notebook that was read.
"""
format = unicode_type(format)
if format == u'json' or format == u'ipynb':
return reads_json(s, **kwargs)
elif format == u'py':
return reads_py(s, **kwargs)
else:
raise NBFormatError('Unsupported format: %s' % format)
def writes(nb, format, **kwargs):
"""Write a notebook to a string in a given format in the current nbformat version.
This function always writes the notebook in the current nbformat version.
Parameters
----------
nb : NotebookNode
The notebook to write.
format : (u'json', u'ipynb', u'py')
The format to write the notebook in.
Returns
-------
s : unicode
The notebook string.
"""
format = unicode_type(format)
if format == u'json' or format == u'ipynb':
return writes_json(nb, **kwargs)
elif format == u'py':
return writes_py(nb, **kwargs)
else:
raise NBFormatError('Unsupported format: %s' % format)
def read(fp, format, **kwargs):
"""Read a notebook from a file and return the NotebookNode object.
This function properly handles notebooks of any version. The notebook
returned will always be in the current version's format.
Parameters
----------
fp : file
Any file-like object with a read method.
format : (u'json', u'ipynb', u'py')
The format that the string is in.
Returns
-------
nb : NotebookNode
The notebook that was read.
"""
return reads(fp.read(), format, **kwargs)
def write(nb, fp, format, **kwargs):
"""Write a notebook to a file in a given format in the current nbformat version.
This function always writes the notebook in the current nbformat version.
Parameters
----------
nb : NotebookNode
The notebook to write.
fp : file
Any file-like object with a write method.
format : (u'json', u'ipynb', u'py')
The format to write the notebook in.
Returns
-------
s : unicode
The notebook string.
"""
return fp.write(writes(nb, format, **kwargs))
def _convert_to_metadata():
"""Convert to a notebook having notebook metadata."""
import glob
for fname in glob.glob('*.ipynb'):
print('Converting file:',fname)
with open(fname,'r') as f:
nb = read(f,u'json')
md = new_metadata()
if u'name' in nb:
md.name = nb.name
del nb[u'name']
nb.metadata = md
with open(fname,'w') as f:
write(nb, f, u'json')