Created
June 2, 2017 20:31
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Automate downloading some basis sets from Kirk Peterson's website
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from __future__ import print_function | |
import requests | |
import bs4 | |
import re | |
headers = { | |
'Referer': 'http://tyr0.chem.wsu.edu/~kipeters/basissets/alkal-nr.html', | |
'Origin': 'http://tyr0.chem.wsu.edu', | |
'Upgrade-Insecure-Requests': '1', | |
'User-Agent': 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.87 Safari/537.36', | |
'Content-Type': 'application/x-www-form-urlencoded', | |
} | |
NUMBER = "((?:[-+]?\\d*\\.\\d+(?:[DdEe][-+]?\\d+)?)|(?:[-+]?\\d+\\.\\d*(?:[DdEe][-+]?\\d+)?))" | |
def pull(element, basis): | |
data = [ | |
('element', element), | |
('basis', basis), | |
('program', 'Gaussian'), | |
] | |
r = requests.post('http://tyr0.chem.wsu.edu/~kipeters/basissets/basisform-alkal.php', data=data) | |
# print(r.text) | |
soup = bs4.BeautifulSoup(r.text, 'lxml').nobr | |
for br in soup.find_all("br"): | |
br.replace_with("\n") | |
text = soup.text.replace(u'\xa0', ' ').replace('!', '') | |
lines = [e.strip() for e in text.splitlines() if e.strip()] | |
return lines | |
def format(lines, element): | |
def process_lines(lines): | |
for line in lines: | |
m0 = re.match(r'^BASIS=.*', line) | |
m1 = re.match(r'^(%s)\s+0' % element, line) | |
m2 = re.match(r'^\s*(\w+)\s*(\d+)\s*(-?\d+\.\d+)', line) | |
m3 = re.match(r'^\s*' + NUMBER + '\s+' + NUMBER + '.*', line) | |
m4 = re.match(r'^\*\*\*\*$', line) | |
if m0: | |
continue | |
elif m1: | |
yield m1.group(1) + ' 0' | |
elif m2: | |
yield m2.group(1) + ' ' + m2.group(2) + ' ' + m2.group(3) | |
elif m3: | |
# >>> '{:20} {: }'.format('ydisp', 0.176) | |
c0 = float(m3.group(1)) | |
c1 = float(m3.group(2)) | |
if float('{: 15.7f}'.format(c0)): | |
f0 = '{: 15.7f}'.format(c0) | |
else: | |
f0 = '{: 15.7e}'.format(c0) | |
f1 = ' {: 23.7e}'.format(c1) | |
yield f0 + f1 | |
elif m4: | |
yield line | |
else: | |
raise ValueError(line) | |
return '\n'.join(process_lines(lines)) | |
def pull_pw(args): | |
l1 = format(pull(element=args.element, basis=args.basis.replace('wC', '')), element=args.element).splitlines() | |
l2 = format(pull(element=args.element, basis=args.basis), element=args.element).splitlines() | |
q1, h1 = format_into_list_of_contractions(l1, args.element) | |
q2, h2 = format_into_list_of_contractions(l2, args.element) | |
print(h1) | |
for shell in q2: | |
if shell not in q1: | |
print('\n'.join(shell)) | |
print('****') | |
def format_into_list_of_contractions(lines, element): | |
basis_set = [] | |
contraction = None | |
for line in lines: | |
m1 = re.match(r'^(%s)\s+0' % element, line) | |
m2 = re.match(r'^\s*(\w+)\s+(\d+)\s+(-?\d+\.\d+)', line) | |
m3 = re.match(r'^\s*' + NUMBER + '\s+' + NUMBER + '.*', line) | |
m4 = re.match(r'^\*\*\*\*$', line) | |
if m1: | |
head = line | |
elif m2: | |
if contraction is not None: | |
basis_set.append(contraction) | |
contraction = [line] | |
elif m3: | |
contraction.append(line) | |
elif m4: | |
basis_set.append(contraction) | |
else: | |
raise ValueError(line) | |
return basis_set, head | |
def main(): | |
import argparse | |
p = argparse.ArgumentParser() | |
p.add_argument('element') | |
p.add_argument('basis') | |
args = p.parse_args() | |
if 'pwC' in args.basis: | |
return pull_pw(args) | |
lines = pull(element=args.element, basis=args.basis) | |
print(format(lines, args.element)) | |
if __name__ == '__main__': | |
main() |
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