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def parse_input_file(input_file):
"""
Parse WarpX input file.
Parameters
----------
input_file : string
Path to input file.
Returns
-------
input_dict : dictionary
Dictionary storing WarpX input parameters
(parameter's name stored as key, parameter's value stored as value).
"""
input_dict = dict()
with open(input_file) as ff:
for line in ff:
sline = line.split('=')
# skip lines that are commented out, blank, or continuation of previous parameters
skip_line = sline[0].startswith('#') or sline[0].startswith('\n') or len(sline) == 1
if not skip_line:
key = sline[0].strip()
val = sline[1].split()
# The value corresponding to a given key of input_dict is a list
# of strings, from which we remove any leftover comments
for i in range(len(val)):
if val[i].startswith('#'):
val = val[:i]
break
input_dict[key] = val
return input_dict
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