I'm reading some data in a message that I receive from a GSM modem in Python.
I need to extract these data parameters before I write them into my MySQL database.
Before I do this, I parse the message in a couple of stages before I am ready to write it to the data base.
Reading and writing from the GSM modem is done by using a serial object phone. This serial object reads into x where data is stored temporarily till the next read/write occurs.
Here's the flow of control in the program:
def reading():
print "Reading all the messages stored on SIM card"
phone.write(b'AT+CMGL="ALL"\r') #Command to read all the messages
sleeps()
x=phone.read(100000000)
sleeps()
print x
print "Now parsing the message!"
k="".join(x)
parse(k)
k=""
def parse(k):
match = re.finditer("\+CMGL: (\d+),""(.+)"",""(.+)"",(.*),""(.+)""\n(.+)\n", k)
for each in match:
break_down(each.group(6))
Here there are multiple messages that are being read. each.group(6) contains the actual message content.
def break_down(s):
c=s.count('<')
if c==9:
res = re.findall('< (.*?) >', s)
for index in res:
print index,item
elif c==7 or c==3:
temp=parsing(s)
pprint(list(temp))
else:
flag=0
c=s.count(':')
if c==8:
res=s.split(' : ')
res=[item.strip() for item in s.split(':')]
for index, item in enumerate(res):
print index, item
results = [float(x) for x in s.split(' ') if x.count('.') == 1]
pprint(results)
dbinsert(res[0],res[1],res[2],res[3],results[0],results[1],results[2],results[3],flag)
if c==7:
flag=1
res=s.split(' : ')
res=[item.strip() for item in s.split(':')]
for index, item in enumerate(res):
print index, item
results = [float(x) for x in s.split(' ') if x.count('.') == 1]
pprint(results)
dbinsert(res[0],res[1],res[2],res[3],results[0],results[1],results[2],results[3],flag)
def parsing(s):
for t in s.split('<'):
for u in t.strip().split('>',1):
if u.strip(): yield u.strip()
def dbinsert(a,b,c,d,e,f,g,h,flag):
import MySQLdb
db = MySQLdb.Connect(host="127.0.0.1", port=3306, user="root", passwd="root", db="ups")
print "In dbinsert"
cursor = db.cursor()
try:
if flag==0:
sql = """INSERT INTO data(F1,
F2, F3, F4, F5, F6, F7, F8)
VALUES (a.value,b.value,c.value,d.value,e.value,f.value,g.value,h.value)"""
cursor.execute(sql)
db.commit()
elif flag==1:
sql = """INSERT INTO data(F1,
F2, F3, F4, F5, F6, F7, F8)
VALUES (a,b,c,,e,f,g,h)"""
cursor.execute(sql)
db.commit()
except:
db.rollback()
db.close()
break_down(s) is able to extract the data exactly as required. However once this data is passed to dbinsert, the data is not getting written to the database. When I try to do this in isolation without the rest of the code with some dummy values, there is no problem. So it isn't a database connection problem.
What am I doing wrong?
Please help.
