Python Class for managing IMPACT-Z/T input files. Includes the ability to read and write input files as well as replace string variables found within the file with numeric values.
The class can be installed from PyPI, using the following command:
pip install impact_inputReads in the input file specified by filename. Includes the ability to remove comments (i.e lines beginning with ! or anything occuring after a /) using exclude_comments. By default exclude_comments = True.
from impact_input import ImpactIn
impact_file = ImpactIn(filename="ImpactT_original.in")Returns a list of all variables found in the input file. Variable names cannot start with a number.
impact_file.variables()Replace the list of variables with the numerical values in the respective order they appear in the list (e.g. gunPhaseF1 becomes 0 below):
replace_var = ["gunPhaseF1","gunPhaseF2"]
val = [0,180]
impact_edit = impact_file.replace(varnames=replace_var,varvals=val)The same operation can be performed using a dictionary:
replace_var = ["gunPhaseF1","gunPhaseF2"]
val = [0,180]
var = dict(zip(replace_var,val))
impact_edit = impact_file.replace(variables=var)Write an input file with the specified filename. Note it is best practice to make the new file have a different name than the initial input so as not to overwite it. As the IMPACT-Z/T executables require the input file to be named "ImpactZ.in" or "ImpactT.in", the initial input file should have a name other than those two options.
impact_edit.write(filename='ImpactT.in')Examples python scripts that use the ImpactIn class to run a phase scan and find the phase with the maximum energy gain for a RF gun can be found here.