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"""
=======================================
Analyse differences between DICOM files
=======================================
This examples illustrates how to find the differences between two DICOM files.
"""
# authors : Guillaume Lemaitre <g.lemaitre58@gmail.com>
# license : MIT
import difflib
import pydicom
from pydicom.data import get_testdata_file
print(__doc__)
filename_mr = get_testdata_file('MR_small.dcm')
filename_ct = get_testdata_file('CT_small.dcm')
datasets = tuple([pydicom.dcmread(filename, force=True)
for filename in (filename_mr, filename_ct)])
# difflib compare functions require a list of lines, each terminated with
# newline character massage the string representation of each dicom dataset
# into this form:
rep = []
for dataset in datasets:
lines = str(dataset).split("\n")
lines = [line + "\n" for line in lines] # add the newline to end
rep.append(lines)
diff = difflib.Differ()
for line in diff.compare(rep[0], rep[1]):
if line[0] != "?":
print(line)
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