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new_str += substr
else:
try:
assert len(substr) >= 2
except Exception:
return string
a = substr[0]
b = substr[1]
if b != '{':
if len(substr) > 2:
post_substr = substr[2:]
new_str += '{' + a + '}{' + b + '}' + post_substr
else:
new_str += '{' + a + '}{' + b + '}'
elif len(substr) > 2:
post_substr = substr[2:]
new_str += '{' + a + '}' + b + post_substr
else:
new_str += '{' + a + '}' + b
string = new_str
return string
def _fix_a_slash_b(string):
if len(string.split('/')) != 2:
return string
a = string.split('/')[0]
b = string.split('/')[1]
try:
a = int(a)
b = int(b)
assert string == '{}/{}'.format(a, b)
new_string = '\\frac{' + str(a) + '}{' + str(b) + '}'
return new_string
except Exception:
return string
def _remove_right_units(string):
if '\\text{ ' in string:
splits = string.split('\\text{ ')
assert len(splits) == 2
return splits[0]
else:
return string
def _fix_sqrt(string):
if '\\sqrt' not in string:
return string
splits = string.split('\\sqrt')
new_string = splits[0]
for split in splits[1:]:
if split[0] != '{':
a = split[0]
new_substr = '\\sqrt{' + a + '}' + split[1:]
else:
new_substr = '\\sqrt' + split
new_string += new_substr
return new_string
def _strip_string(string):
string = string.replace('\n', '')
string = string.replace('\\!', '')
string = string.replace('\\\\', '\\')
string = string.replace('tfrac', 'frac')
string = string.replace('dfrac', 'frac')
string = string.replace('\\left', '')
string = string.replace('\\right', '')
string = string.replace('^{\\circ}', '')
string = string.replace('^\\circ', '')
string = string.replace('\\$', '')
string = _remove_right_units(string)
string = string.replace('\\%', '')
string = string.replace('\\%', '')
string = string.replace(' .', ' 0.')
string = string.replace('{.', '{0.')
if len(string) == 0:
return string
if string[0] == '.':
string = '0' + string
if len(string.split('=')) == 2:
if len(string.split('=')[0]) <= 2:
string = string.split('=')[1]
string = _fix_sqrt(string)
string = string.replace(' ', '')
string = _fix_fracs(string)
if string == '0.5':
string = '\\frac{1}{2}'
string = _fix_a_slash_b(string)
return string
def is_equiv(str1, str2, verbose=False):
if str1 is None and str2 is None:
print('WARNING: Both None')
return True
if str1 is None or str2 is None:
return False
(str1, str2) = (parse_math_answer(str1), parse_math_answer(str2))
try:
ss1 = _strip_string(str1)
ss2 = _strip_string(str2)
if verbose: