Hey Shashidhar,
Others may answer your question, I am not going to do that right away. I'll just
offer a few suggestions to clean up your code. If you do that, I promise to
answer your questions:
a. Use os.path.join() to join path components
b. You don't /have/ to read all the lines of the file into a list before
processing it. The pythonic way would be:
with open(filename) as input_file:
for line in input_file.readline():
...do stuff ...
c. You don't need to iterate over lists using numeric indexes. Even if you
/need/ numeric index, use enumerate. So, instead of :
for index in range(len(somelist)):
...do something with somelist[index] ...
OR
...do something with index ...
use something like:
for element in somelist:
...do something with element...
OR
for index, element in enumerate(somelist):
...do something with index or element ....
d. Don't chain string operations to just match a substring, use regular
expressions. If you /have/ to chain string operations (for instance, to extract
rather than match), chain them only once. So, instead of :
if all_lines_in_file[line].split('->')[1].split(')')[0].split("'")[1].strip() ==
"true":
...
...
print "ZMP value %s" %
all_lines_in_file[line].split('->')[1].split(')')[0].split("'")[1].strip()
...and more such monstrosities, do either:
stuff_that_interests_me = line.split('->')[1].split(')')[0]("'")[1].strip()
if stuff_that_interests_me == 'true':
....
or just:
matched = re.search("->\((.*)\)", line) # or some such, depending on the format
if matched:
stuff_that_interests_me = matched.group()
....
e. If you need one of three options as values of a dict (which I assume will
serve as a config dict), default the config keys to something. So, do:
config = {'MyFirstKey' : 'ASK',
'MyNextKey' : 'ASK',
...
}
for line in all_lines:
...extract stuff_that_interests_me from line...
if 'MyFirstKey' in line:
if stuff_that_interests_me == 'true':
config['MyFirstKey'] = 'ON'
elif stuff_that_interests_me == 'false':
config['MyFirstKey'] = 'OFF'
...
HTH,
cheers,
- steve
On 11/07/2011 05:17 PM, Shashidhar Paragonda wrote:
Dear Python hackers,
I have text file. I read each line and store it in List.
my requirement is I need to check only 6 special lines from i.e
1. resultToPDFFile
2. resultToPDFFileDialog
3. resultToQdasFile
4. resultToQdasFileDialog
5. resultToTableFile
6. resultToTableFileDialog
Note: each line have value set in the end eg: "resultToPDFFile '->' true"
my conditions are:
if first line mentioned above found check the value if it "true"
set dictionary item D['PDF'] = "ON"
else if value is not "true" then
check for line resultToPDFFileDialog if value is "off"
set dictionary item D['PDF'] = "OFF"
else:
set dictionary item D['PDF'] = "ASK"
for example these are the lines in file:
resultToPDFFile '->' 'true'
resultToPDFFileDialog '->' 'on'
>> I have put if else condition statements exactly same as I mentioned
above.
>> now my problem is though the resultToPDFFile is "true"
>> first time I get the value as ON for dictionary item D['PDF']
>> When loop starts for finding other lines i.e numbers 3& 4 from
above list my Dictionary item D['PDF'] is becoming "ASK"
>> the loop is entering into last else part.
>> what is problem I am not gotting
>> is my if else structure is wrong or not I am totally not getting
other idea please help
>> thank you in advance.
the code is:
inspset_file_pointer = open("%s/%s" % (self.inspsetfile_path,
self.inspection_file), "r")
# Read all lines from the INSPSET file from the TEMPORARY
directory path
all_lines_in_file = inspset_file_pointer.readlines()
inspset_file_pointer.close()
# loop through all the lines from the file
print "readlines from the file"
for line in range(0, len(all_lines_in_file)-1):
time.sleep(.5)
if "measPointsForLaterEval" in all_lines_in_file[line]:
print "ZMP line found %s" % all_lines_in_file[line]
if
all_lines_in_file[line].split('->')[1].split(')')[0].split("'")[1].strip()
== "true":
time.sleep(.3)
print all_lines_in_file[line]
print "ZMP value %s" %
all_lines_in_file[line].split('->')[1].split(')')[0].split("'")[1].strip()
self.cnc_parameters['ZMP'] = "ON"
print "dictionary values in ZMP %s" %
self.cnc_parameters
exit
elif "measPointsForLaterEvalDialog" in
all_lines_in_file[line]:
if
all_lines_in_file[line+1].split(')')[0].split('#')[1] == "off":
time.sleep(.3)
print all_lines_in_file[line]
print "ZMP dialog value %s" %
all_lines_in_file[line+1].split(')')[0].split('#')[1]
self.cnc_parameters['ZMP'] = "OFF"
print "dictionary values in ZMP %s" %
self.cnc_parameters
exit
else:
self.cnc_parameters['ZMP'] = "ASK"
elif "resultsToPDFFile" in all_lines_in_file[line]:
print "PDF line found %s" % all_lines_in_file[line]
# check if current line i.e resultToPDFFile line has
value is 'true'
# same verification lines are same for rest of the
keywords
if
all_lines_in_file[line].split('->')[1].split(')')[0].split("'")[1].strip()
== "true":
time.sleep(.3)
print all_lines_in_file[line]
print "PDF value %s" %
all_lines_in_file[line].split('->')[1].split(')')[0].split("'")[1].strip()
self.cnc_parameters['PDF'] = "ON"
print "dictionary values in PDF %s" %
self.cnc_parameters
elif "resultToExportToPDFDialog" in
all_lines_in_file[line]:
if
all_lines_in_file[line+1].split(')')[0].split('#')[1] == "off":
time.sleep(.3)
print all_lines_in_file[line]
print "PDF dialog value %s" %
all_lines_in_file[line+1].split(')')[0].split('#')[1]
self.cnc_parameters['PDF'] = "OFF"
print "dictionary values in PDF %s" %
self.cnc_parameters
else:
self.cnc_parameters['PDF'] = "ASK"
elif "resultToQdasFile" in all_lines_in_file[line]:
print "Qdas line found %s" % all_lines_in_file[line]
if
all_lines_in_file[line].split('->')[1].split(')')[0].split("'")[1].strip()
== "true":
time.sleep(.3)
print all_lines_in_file[line]
print "QDAS value %s" %
all_lines_in_file[line].split('->')[1].split(')')[0].split("'")[1].strip()
self.cnc_parameters['QDAS'] = "ON"
print "dictionary values in QDAS %s" %
self.cnc_parameters
exit
elif "resultToQdasFileDialog" in
all_lines_in_file[line]:
if
all_lines_in_file[line+1].split(')')[0].split('#')[1] == "off":
time.sleep(.3)
print all_lines_in_file[line]
print "QDAS dialog value %s" %
all_lines_in_file[line+1].split(')')[0].split('#')[1]
self.cnc_parameters['QDAS'] = "OFF"
print "dictionary values in QDAS %s" %
self.cnc_parameters
exit
else:
self.cnc_parameters['QDAS'] = "ASK"
elif "resultToTableFile" in all_lines_in_file[line]:
print "HDR line found %s" % all_lines_in_file[line]
if
all_lines_in_file[line].split('->')[1].split(')')[0].split("'")[1].strip()
== "true":
time.sleep(.3)
print all_lines_in_file[line]
print "HDR value %s" %
all_lines_in_file[line].split('->')[1].split(')')[0].split("'")[1].strip()
self.cnc_parameters['HDR'] = "ON"
print "dictionary values in HDR %s" %
self.cnc_parameters
exit
elif "resultToTableFileDialog" in
all_lines_in_file[line]:
if
all_lines_in_file[line+1].split(')')[0].split('#')[1] == "off":
time.sleep(.3)
print all_lines_in_file[line]
print "HDR dialog value %s" %
all_lines_in_file[line+1].split(')')[0].split('#')[1]
self.cnc_parameters['HDR'] = "OFF"
print "dictionary values in HDR %s" %
self.cnc_parameters
exit
else:
self.cnc_parameters['HDR'] = "ASK"
--
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