Tuesday, 30 October 2018

arcgis desktop - Saving *.dbf as *.xls using Python?



I've been let loose in the workplace to learn python to do things in Arcmap 10. so, I am learning python as I go and trying to remember the programming I have done.


Where I am in this project is converting a dbf, or csv, xls in a simple fashion. from there, all the files will be copied together into one file. I've got the all-in-one xls working, but I can't find an easy, simple dbf to xls solution.


I condensed code found here: http://blog.gmane.org/gmane.comp.python.education/page=12


into:


from xlwt import Workbook
import dbfpy.dbf

input0 = '...file.dbf'
output = '...file.xls'


def test1():
dbf = dbfpy.dbf.Dbf(input0)
book = Workbook()
sheet1 = book.add_sheet('Sheet 1')
for row in range(len(dbf)):
for col in range(2):#chop to two for my purposes, gm
sheet1.row(row).write(col, dbf[row][col])
book.save(output)

test1()


This works, minus the lack of field names.



Answer



Like whuber says, you have to write out the headers explicitly. I loaded up dbfpy and xlwt in a virtualenv and ran this:


from xlwt import Workbook, easyxf
import dbfpy.dbf
from time import time

def test1():
dbf = dbfpy.dbf.Dbf("pipelines.dbf", readOnly = True)


header_style = easyxf('font: name Arial, bold True, height 200;')

book = Workbook()
sheet1 = book.add_sheet('Sheet 1')

for (i, name) in enumerate(dbf.fieldNames):
sheet1.write(0, i, name, header_style)

for (i, thecol) in enumerate(dbf.fieldDefs):

name, thetype, thelen, thedec = str(thecol).split()
colwidth = max(len(name), int(thelen))
sheet1.col(i).width = colwidth * 310

for row in range(1,len(dbf)):
for col in range(len(dbf.fieldNames)):
sheet1.row(row).write(col, dbf[row][col])

book.save("pipelines-xls.xls")


if __name__ == "__main__":
start = time()
test1()
end = time()
print end - start

This gives me headers in my xls:


enter image description here


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