apppublic/appPublic/CSVData.py

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Python
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2019-07-16 16:33:07 +08:00
import csv
class CSVData:
def __init__(self,csvfile,names = None,headline = 0,dataline = 1):
self.csvfile = csvfile
self.names = names
self.headline = headline
self.dataline = dataline
def read(self):
f = open(self.csvfile,'rb')
reader = csv.reader(f)
fields = None
if self.names is not None:
fields = self.names
data = []
lno = 0
for l in reader:
if fields is None and lno == self.headline:
fields = [f for f in l]
if lno >= self.dataline:
rec = {}
for i in range(len(fields)):
rec[fields[i]] = l[i]
data.append(rec)
lno += 1
f.close()
return data
def iterRead(self):
self.fd = open(self.csvfile,'r')
try:
reader = csv.reader(self.fd)
fields = None
if self.names is not None:
fields = self.names
lno = 0
self.onBegin()
for l in reader:
if fields is None and lno == self.headline:
fields = [f for f in l]
if lno >= self.dataline:
rec = {}
for i in range(len(fields)):
rec[fields[i]] = l[i]
self.onRecord(rec)
lno += 1
self.fd.close()
self.onFinish()
except exception as e:
fd.close()
raise e
def onReadBegin(self):
pass
def onRecord(self,rec):
print(rec)
def onFinish(self):
print("onFinish() called")
if __name__ == '__main__':
import sys
cd = CSVData(sys.argv[1],names = ['st_date','open_price','max_price','min_price','close_price','volume','adj_price'])
cd.iterRead()