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"""Doctest-related utilities for IPython.
For most common uses, all you should need to run is::
from IPython.dtutils import idoctest
See the idoctest docstring below for usage details.
"""
import doctest
import sys
import IPython.ipapi
ip = IPython.ipapi.get()
def rundoctest(text,ns=None,eraise=False):
"""Run a the input source as a doctest, in the caller's namespace.
:Parameters:
text : str
Source to execute.
:Keywords:
ns : dict (None)
Namespace where the code should be executed. If not given, the
caller's locals and globals are used.
eraise : bool (False)
If true, immediately raise any exceptions instead of reporting them at
the end. This allows you to then do interactive debugging via
IPython's facilities (use %debug after the fact, or with %pdb for
automatic activation).
"""
name = 'interactive doctest'
filename = '<IPython console>'
if eraise:
runner = doctest.DebugRunner()
else:
runner = doctest.DocTestRunner()
parser = doctest.DocTestParser()
if ns is None:
f = sys._getframe(1)
ns = f.f_globals.copy()
ns.update(f.f_locals)
test = parser.get_doctest(text,ns,name,filename,0)
runner.run(test)
runner.summarize(True)
def idoctest(ns=None,eraise=False):
"""Interactively prompt for input and run it as a doctest.
To finish entering input, enter two blank lines or Ctrl-D (EOF). If you
use Ctrl-C, the example is aborted and all input discarded.
:Keywords:
ns : dict (None)
Namespace where the code should be executed. If not given, the IPython
interactive namespace is used.
eraise : bool (False)
If true, immediately raise any exceptions instead of reporting them at
the end. This allows you to then do interactive debugging via
IPython's facilities (use %debug after the fact, or with %pdb for
automatic activation).
end_mark : str ('--')
String to explicitly indicate the end of input.
"""
inlines = []
empty_lines = 0 # count consecutive empty lines
run_test = True
if ns is None:
ns = ip.user_ns
ip.IP.savehist()
try:
while True:
line = raw_input()
if not line or line.isspace():
empty_lines += 1
else:
empty_lines = 0
if empty_lines>=2:
break
inlines.append(line)
except EOFError:
pass
except KeyboardInterrupt:
print "KeyboardInterrupt - Discarding input."
run_test = False
ip.IP.reloadhist()
if run_test:
# Extra blank line at the end to ensure that the final docstring has a
# closing newline
inlines.append('')
rundoctest('\n'.join(inlines),ns,eraise)
# For debugging of this module itself.
if __name__ == "__main__":
t = """
>>> for i in range(10):
... print i,
...
0 1 2 3 4 5 6 7 8 9
"""
t2 = """
A simple example::
>>> for i in range(10):
... print i,
...
0 1 2 3 4 5 6 7 8 9
Some more details::
>>> print "hello"
hello
"""
t3 = """
A failing example::
>>> x=1
>>> x+1
3
"""
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