42 lines
980 B
Python
42 lines
980 B
Python
#!/usr/bin/python
|
|
#
|
|
# File: mitx/lib/loncapa/loncapa_check.py
|
|
#
|
|
# Python functions which duplicate the standard comparison functions available to LON-CAPA problems.
|
|
# Used in translating LON-CAPA problems to i4x problem specification language.
|
|
|
|
|
|
import math
|
|
import random
|
|
from six.moves import range
|
|
|
|
|
|
def lc_random(lower, upper, stepsize):
|
|
'''
|
|
like random.randrange but lower and upper can be non-integer
|
|
'''
|
|
nstep = int((upper - lower) / (1.0 * stepsize))
|
|
choices = [lower + x * stepsize for x in range(nstep)]
|
|
return random.choice(choices)
|
|
|
|
|
|
def lc_choose(index, *args):
|
|
'''
|
|
return args[index]
|
|
'''
|
|
try:
|
|
return args[int(index) - 1]
|
|
except Exception as err:
|
|
pass
|
|
if len(args):
|
|
return args[0]
|
|
raise Exception(
|
|
"loncapa_check.lc_choose error, index={index}, args={args}".format(
|
|
index=index,
|
|
args=args,
|
|
)
|
|
)
|
|
|
|
deg2rad = math.pi / 180.0
|
|
rad2deg = 180.0 / math.pi
|