from aspose.cells import Workbook

#  For complete examples and data files, please go to https:# github.com/aspose-cells/Aspose.Cells-for-.NET
#  The path to the documents directory.
dataDir = RunExamples.GetDataDir(".")
inputPath = dataDir + "Sample.xlsx"
outputPath = dataDir + "Output.out.xlsx"
workbook = Workbook(inputPath)
worksheet = workbook.worksheets[0]
cell = worksheet.cells.get("A1")
print("Before updating the font settings....")
fnts = cell.get_characters()
for i in range(len(fnts)):
    print(fnts[i].font.name)
#  Modify the first FontSetting Font Name
fnts[0].font.name = "Arial"
#  And update it using SetCharacters() method
cell.set_characters(fnts)
print()
print("After updating the font settings....")
fnts = cell.get_characters()
for i in range(len(fnts)):
    print(fnts[i].font.name)
#  Save workbook
workbook.save(outputPath)