How can I convert a .txt file to an xml file using python?
Latitude :23.1100348
Longitude:72.5364922
date&time :30:August:2014 05:04:31 PM
gsm cell id: 4993
Neighboring List- Lac : Cid : RSSI
15000 : 7072 : 25 dBm
15000 : 7073 : 23 dBm
15000 : 6102 : 24 dBm
15000 : 6101 : 24 dBm
15000 : 6103 : 17 dBm
Latitude :23.1120549
Longitude:72.5397988
date&time :30:August:2014 05:04:34 PM
gsm cell id: 4993
Neighboring List- Lac : Cid : RSSI
15000 : 7072 : 24 dBm
15000 : 7073 : 22 dBm
15000 : 6102 : 23 dBm
15000 : 6101 : 23 dBm
15000 : 2552 : 16 dBm
This is the my.txt file. I want to convert it to xml file like
<celldata>
<time> </time>
<latitude> </latitude>
<longitude> </longitude>
</celldata>
I tried to list all components, but I didn't get o / pI want to keep all the latitude, longitude, gsm, time id values in the list and this will add something like this to the xml file. I am writing below code.
import re
pa = 'Longitude|Latitude|gsm cell id|Neighboring List- Lac : Cid : RSSI'
with open('cell.txt','rw') as file:
for line in file:
line.strip()
if re.search(pa, line):
lineInfo = line.split(':')
title = lineInfo[0]
value = lineInfo[1]
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1 answer
Try using the following code as a starter:
#!python3
import re
import xml.etree.ElementTree as ET
rex = re.compile(r'''(?P<title>Longitude
|Latitude
|date&time
|gsm\s+cell\s+id
)
\s*:?\s*
(?P<value>.*)
''', re.VERBOSE)
root = ET.Element('root')
root.text = '\n' # newline before the celldata element
with open('cell.txt') as f:
celldata = ET.SubElement(root, 'celldata')
celldata.text = '\n' # newline before the collected element
celldata.tail = '\n\n' # empty line after the celldata element
for line in f:
# Empty line starts new celldata element (hack style, uggly)
if line.isspace():
celldata = ET.SubElement(root, 'celldata')
celldata.text = '\n'
celldata.tail = '\n\n'
# If the line contains the wanted data, process it.
m = rex.search(line)
if m:
# Fix some problems with the title as it will be used
# as the tag name.
title = m.group('title')
title = title.replace('&', '')
title = title.replace(' ', '')
e = ET.SubElement(celldata, title.lower())
e.text = m.group('value')
e.tail = '\n'
# Display for debugging
ET.dump(root)
# Include the root element to the tree and write the tree
# to the file.
tree = ET.ElementTree(root)
tree.write('cell.xml', encoding='utf-8', xml_declaration=True)
It displays your example data:
<root>
<celldata>
<latitude>23.1100348</latitude>
<longitude>72.5364922</longitude>
<datetime>30:August:2014 05:04:31 PM</datetime>
<gsmcellid>4993</gsmcellid>
</celldata>
<celldata>
<latitude>23.1120549</latitude>
<longitude>72.5397988</longitude>
<datetime>30:August:2014 05:04:34 PM</datetime>
<gsmcellid>4993</gsmcellid>
</celldata>
</root>
Update for the list of favorite neighbors:
#!python3
import re
import xml.etree.ElementTree as ET
rex = re.compile(r'''(?P<title>Longitude
|Latitude
|date&time
|gsm\s+cell\s+id
|Neighboring\s+List-\s+Lac\s+:\s+Cid\s+:\s+RSSI
)
\s*:?\s*
(?P<value>.*)
''', re.VERBOSE)
root = ET.Element('root')
root.text = '\n' # newline before the celldata element
with open('cell.txt') as f:
celldata = ET.SubElement(root, 'celldata')
celldata.text = '\n' # newline before the collected element
celldata.tail = '\n\n' # empty line after the celldata element
for line in f:
# Empty line starts new celldata element (hack style, uggly)
if line.isspace():
celldata = ET.SubElement(root, 'celldata')
celldata.text = '\n'
celldata.tail = '\n\n'
else:
# If the line contains the wanted data, process it.
m = rex.search(line)
if m:
# Fix some problems with the title as it will be used
# as the tag name.
title = m.group('title')
title = title.replace('&', '')
title = title.replace(' ', '')
if line.startswith('Neighboring'):
neighbours = ET.SubElement(celldata, 'neighbours')
neighbours.text = '\n'
neighbours.tail = '\n'
else:
e = ET.SubElement(celldata, title.lower())
e.text = m.group('value')
e.tail = '\n'
else:
# This is the neighbour item. Split it by colon,
# and set the attributes of the item element.
item = ET.SubElement(neighbours, 'item')
item.tail = '\n'
lac, cid, rssi = (a.strip() for a in line.split(':'))
item.attrib['lac'] = lac
item.attrib['cid'] = cid
item.attrib['rssi'] = rssi.split()[0] # dBm removed
# Include the root element to the tree and write the tree
# to the file.
tree = ET.ElementTree(root)
tree.write('cell.xml', encoding='utf-8', xml_declaration=True)
An update to accept an empty string before neighbors is also a more efficient implementation for general purposes:
#!python3
import re
import xml.etree.ElementTree as ET
rex = re.compile(r'''(?P<title>Longitude
|Latitude
|date&time
|gsm\s+cell\s+id
|Neighboring\s+List-\s+Lac\s+:\s+Cid\s+:\s+RSSI
)
\s*:?\s*
(?P<value>.*)
''', re.VERBOSE)
root = ET.Element('root')
root.text = '\n' # newline before the celldata element
with open('cell.txt') as f:
celldata = ET.SubElement(root, 'celldata')
celldata.text = '\n' # newline before the collected element
celldata.tail = '\n\n' # empty line after the celldata element
status = 0 # init status of the finite automaton
for line in f:
if status == 0: # lines of the heading expected
# If the line contains the wanted data, process it.
m = rex.search(line)
if m:
# Fix some problems with the title as it will be used
# as the tag name.
title = m.group('title')
title = title.replace('&', '')
title = title.replace(' ', '')
if line.startswith('Neighboring'):
neighbours = ET.SubElement(celldata, 'neighbours')
neighbours.text = '\n'
neighbours.tail = '\n'
status = 1 # empty line and then list of neighbours expected
else:
e = ET.SubElement(celldata, title.lower())
e.text = m.group('value')
e.tail = '\n'
# keep the same status
elif status == 1: # empty line expected
if line.isspace():
status = 2 # list of neighbours must follow
else:
raise RuntimeError('Empty line expected. (status == {})'.format(status))
status = 999 # error status
elif status == 2: # neighbour or the empty line as final separator
if line.isspace():
celldata = ET.SubElement(root, 'celldata')
celldata.text = '\n'
celldata.tail = '\n\n'
status = 0 # go to the initial status
else:
# This is the neighbour item. Split it by colon,
# and set the attributes of the item element.
item = ET.SubElement(neighbours, 'item')
item.tail = '\n'
lac, cid, rssi = (a.strip() for a in line.split(':'))
item.attrib['lac'] = lac
item.attrib['cid'] = cid
item.attrib['rssi'] = rssi.split()[0] # dBm removed
# keep the same status
elif status == 999: # error status -- break the loop
break
else:
raise LogicError('Unexpected status {}.'.format(status))
break
# Display for debugging
ET.dump(root)
# Include the root element to the tree and write the tree
# to the file.
tree = ET.ElementTree(root)
tree.write('cell.xml', encoding='utf-8', xml_declaration=True)
The code implements a so-called state machine, where a variable status
represents its current status. You can visualize it with a pencil and draw small circles with value numbers inside (called nodes in graph theory). While in status, you only allow some kind of input ( line
). When the input is recognized, you draw an arrow (directed edge in graph theory) to a different state (possibly with the same status as the loop traversing back to the same node). Arrow is annotated with `condition | act".
The result can look complicated in the beginning; however, it is easy in the sense that you can always focus on the part of the code that belongs to a certain status. And also the code can be easily changed. However, finite state machines have limited power. But they are just perfect for such problems.
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