def gen_smpl(self, idx, n_digits, n_nums, var_digits=0):
""" generate an example of a simple addition
"""
assert (n_digits >= 1)
assert (var_digits < n_digits)
q_tab = Tabular(' c r ', row_height=1.2)
# contents...
nums = [gen_rnd(n_digits, var_digits) for n in range(0, n_nums)]
sgns = [sign(randint(-1000000, 1000000)) for n in range(0, n_nums)]
sign_syms = list(map(lambda x: '+' if x == 1 else '-', sgns))
sum_str = ''.join(
[sign_syms[n] + str(nums[n]) for n in range(0, n_nums)])
if sum_str[0] == '+':
sum_str = sum_str[1:] # tail if leading with a '+'
mth = Math(escape=False, inline=True)
mth.append(NoEscape(sum_str + '='))
q_tab.add_row((bold(str(idx) + ':'), mth))
a_tab = Tabular(' l l ', row_height=1.1)
a_idx = bold(str(idx) + ":")
res = sum(multiply(nums, sgns))
a_tab.add_row((a_idx, res))
#print(sum_str, '=', res)
return (q_tab, a_tab)
def gen_smpl(self, idx, n_digits, n_nums, var_digits=0):
""" generate an example of a simple addition
"""
assert (n_digits >= 1)
assert (var_digits < n_digits)
q_tab = Tabular(' c r ', row_height=1.2)
nums = [gen_rnd(n_digits, var_digits) for n in range(0, n_nums)]
sum_str = functools.reduce(lambda x, y: str(x) + '-' + str(y), nums)
mth = Math(escape=False, inline=True)
mth.append(NoEscape(sum_str + '='))
q_tab.add_row((bold(str(idx) + ':'), mth))
a_tab = Tabular(' l l ', row_height=1.1)
a_idx = bold(str(idx) + ":")
a_tab.add_row((a_idx, nums[0] - sum(nums[1:])))
return (q_tab, a_tab)