A series of Python3 script to lower the barrier of computing and simulating molecular and material systems.
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def nwchem(job,method,nproc,geom,charge,mult,scalfreq,restart,conv_thr,iter):
# Extracting geometry information
symb = []
x = []
y = []
z = []
with open(geom, 'r') as f:
nAtom = next(f)
next(f)
for line in f:
arr = line.split()
symb.append(arr[0])
x.append(arr[1])
y.append(arr[2])
z.append(arr[3])
with open('cmmd.in','w') as f:
if restart == 'true':
print("restart cmmde_nw",file=f)
else:
print("start cmmde_nw",file=f)
print("""title "NWChem calculation"
geometry units au""",file=f)
for i,x,y,z in zip(symb,x,y,z):
print("{} {} {} {}".format(i,x,y,z),file=f)
print("end",file=f)
basis_set = method.split()[1]
print("""basis
* library {}
end""".format(basis_set),file=f)
print("""scf
thresh {}
maxiter {}
end""".format(conv_thr,iter),file=f)
if job == 'opt':
print("task scf optimize",file=f)
else:
print("task scf",file=f)