[Python] How to set Variable Width and Decimals in SPSS with Python?

I'm trying to manipulate some .sav files with SavReaderWriter. What I already have is this:

with savReaderWriter.SavReader(dirIn, ioUtf8 = True) as reader:
df = pd.DataFrame(reader.all(), columns = [s for s in reader.header])
varLabels = reader.varLabels
varTypes = reader.varTypes
valueLabels = reader.valueLabels
varWidth = reader.varWids # <------------- This guy
varMeasure = reader.measureLevels
varAlignments = reader.alignments
varColumnWidths = reader.columnWidths
varMissingValues = reader.missingValues


and:

with SavWriter(savFileName = dirOut,
varNames = varNames,
varTypes = varTypes,
varLabels= varLabels,
valueLabels = valueLabels,
measureLevels = varMeasure,
columnWidths = varColumnWidths,
alignments = varAlignments,
missingValues = varMissingValues,
ioUtf8=True
) as writer:

for record in records:
writer.writerow(record)


The problem is that I don't know how can I set the Variable Width that I got when reading the sav at fist code, when using the SavWriter part. Does anyone else know what can I do?

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