i have many data.frames() that i am trying to send to MySQL database via RMySQL().
# Sends data frame to database without a problem
dbWriteTable(con3, name="SPY", value=SPY , append=T)
# stock1 contains a character vector of stock names...
stock1 <- c("SPY.A")
But when I try to loop it:
i= 1
while(i <= length(stock1)){
# converts "SPY.A" into SPY
name <- print(paste0(str_sub(stock1, start = 1, end = -3))[i], quote=F)
# sends data.frame to database
dbWriteTable(con3,paste0(str_sub(stock1, start = 1, end = -3))[i], value=name, append=T)
i <- 1+i
}
The following warning is returned & nothing was sent to database
In addition: Warning message:
In file(fn, open = "r") :
cannot open file './SPY': No such file or directory
However, I believe that the problem is with pasting value onto dbWriteTable() since writing dbWriteTable(con3, "SPY", SPY, append=T) works but dbWriteTable(con3, "SPY", name, append=T) will not...
You are probably using a non-base package for str_sub and I'm guessing you get the same behavior with substr. Does this succeed?
dbWriteTable(con3, substr( stock1, 1,3) , get(stock1), append=T)
Related
I'm using this code to load the ECG-ID database into MATLAB:
%% Initialization
clear all; close all; clc
%% read files from folder A
% Specify the folder where the files live.
myFolder = 'Databases\ECG_ID';
% Check to make sure that folder actually exists. Warn user if it doesn't.
if ~isfolder(myFolder)
errorMessage = sprintf('Error: The following folder does not exist:\n%s\nPlease specify a new folder.', myFolder;)
uiwait(warndlg(errorMessage);)
myFolder = uigetdir(; % Ask for a new one.)
if myFolder == 0
% User clicked Cancel
return;
end
end
% Get a list of all files in the folder with the desired file name pattern.
filePattern = fullfile(myFolder, '**/rec_*'; % Change to whatever pattern you need.)
theFiles = dir(filePattern;)
for k = 1 : length(theFiles)
baseFileName = theFiles(k.name;)
fullFileName = fullfile(theFiles(k.folder, baseFileName);)
fprintf(1, 'Now reading %s\n', fullFileName;)
% Now do whatever you want with this file name,
% such as reading it in as an image array with imread()
[sig, Fs, tm] = rdsamp(fullFileName, [1],[],[],[],1;)
end
But I keep getting this error message:
Now reading C:\Users\******\Documents\MATLAB\Databases\ECG_ID\Person_01\rec_1.atr
Error using rdsamp (line 203)
Could not find record: C:\Users\******\Documents\MATLAB\Databases\ECG_ID\Person_01\rec_1.atr. Search path is set to: '.
C:\Users\******\Documents\MATLAB\mcode\..\database\ http://physionet.org/physiobank/database/'
I can successfully load one signal at a time (but I can't load the entire database using the above code) using this command:
[sig, Fs, tm] = rdsamp('Databases\ECG_ID\Person_01\rec_1');
How do I solve this problem? How can I load all the files in MATLAB?
Thanks in advance.
I used Python 3.4 to create a programm that goes through E-mails and saves specific attachments to a file server.
Each file is saved to a specific destination depending on the sender's E-mail's address.
My problem is that the destination folders and the attachments are both in Hebrew and for a few attachments I get an error that the path does not exsist.
Now that's not possible because It can fail for one attachment but not for the others on the same Mail (the destination folder is decided by the sender's address).
I want to debug the issue but I cannot get python to display the file path it is trying to save correctly. (it's mixed hebrew and english and it always displays the path in a big mess, although it works correctly 95% of the time when the file is being saved to the file server)
So my questions are:
what should I add to this code so that it will proccess Hewbrew correctly?
Should I encode or decode somthing?
Are there characters I should avoid when proccessing the files?
here's the main piece of code that fails:
try:
found_attachments = False
for att in msg.Attachments:
_, extension = split_filename(str(att))
# check if attachment is not inline
if str(att) not in msg.HTMLBody:
if extension in database[sender][TYPES]:
file = create_file(str(att), database[sender][PATH], database[sender][FORMAT], time_stamp)
# This is where the program fails:
att.SaveAsFile(file)
print("Created:", file)
found_attachments = True
if found_attachments:
items_processed.append(msg)
else:
items_no_att.append(msg)
except:
print("Error with attachment: " + str(att) + " , in: " + str(msg))
and the create file function:
def create_file(att, location, format, timestamp):
"""
process an attachment to make it a file
:param att: the name of the attachment
:param location: the path to the file
:param format: the format of the file
:param timestamp: the time and date the attachment was created
:return: return the file created
"""
# create the file by the given format
if format == "":
output_file = location + "\\" + att
else:
# split file to name and type
filename, extension = split_filename(att)
# extract and format the time sent on
time = str(timestamp.time()).replace(":", ".")[:-3]
# extract and format the date sent on
day = str(timestamp.date())
day = day[-2:] + day[4:-2] + day[:4]
# initiate the output file
output_file = format
# add the original file name where needed
output_file = output_file.replace(FILENAME, filename)
# add the sent date where needed
output_file = output_file.replace(DATE, day)
# add the time sent where needed
output_file = output_file.replace(TIME, time)
# add the path and type
output_file = location + "\\" + output_file + "." + extension
print(output_file)
# add an index to the file if necessary and return it
index = get_file_index(output_file)
if index:
filename, extension = split_filename(output_file)
return filename + "(" + str(index) + ")." + extension
else:
return output_file
Thanks in advance, I would be happy to explain more or supply more code if needed.
I found out that the promlem was not using Hebrew. I found that there's a limit on the number of chars that the (path + filename) can hold (255 chars).
The files that failed excided that limit and that caused the problem
I'm trying to create an application. The application gives the user 2 combo boxes. Combo Box 1 gives the first part of the file name the user wants, and Combo Box 2 gives the second part of the file name. E.g. Combo box 1 option 1 is 1 and Combo Box 2 option 1 is A; the selected file is 1_A.txt.
I have a load button which is to use the file name , and open a file with that name. If no file exists, the application opens a dialog saying "No Such File Exists"
from PySide import QtGui, QtCore
from PySide.QtCore import*
from PySide.QtGui import*
class MainWindow(QtGui.QMainWindow):
def __init__(self,):
QtGui.QMainWindow.__init__(self)
QtGui.QApplication.setStyle('cleanlooks')
#PushButtons
load_button = QPushButton('Load',self)
load_button.move(310,280)
run_Button = QPushButton("Run", self)
run_Button.move(10,340)
stop_Button = QPushButton("Stop", self)
stop_Button.move(245,340)
#ComboBoxes
#Option1
o1 = QComboBox(self)
l1 = QLabel(self)
l1.setText('Option 1:')
l1.setFixedSize(170, 20)
l1.move(10,230)
o1.move(200, 220)
o1.setFixedSize(100, 40)
o1.insertItem(0,'')
o1.insertItem(1,'A')
o1.insertItem(2,'B')
o1.insertItem(3,'test')
#Option2
o2 = QComboBox(self)
l2 = QLabel(self)
l2.setText('Option 2:')
l2.setFixedSize(200, 20)
l2.move(10,290)
o2.move(200,280)
o2.setFixedSize(100, 40)
o2.insertItem(0,'')
o2.insertItem(1,'1')
o2.insertItem(2,'2')
o2.insertItem(3,'100')
self.fileName = QLabel(self)
self.fileName.setText("Select Options")
o1.activated.connect(lambda: self.fileName.setText(o1.currentText() + '_' + o2.currentText() + '.txt'))
o2.activated.connect(lambda: self.fileName.setText(o1.currentText() + '_' + o2.currentText() + '.txt'))
load_button.clicked.connect(self.fileHandle)
def fileHandle(self):
file = QFile(str(self.fileName.text()))
open(file, 'r')
if __name__ == '__main__':
import sys
app = QtGui.QApplication(sys.argv)
window = MainWindow()
window.setWindowTitle("Test11")
window.resize(480, 640)
window.show()
sys.exit(app.exec_())
The error I'm getting is TypeError: invalid file: <PySide.QtCore.QFile object at 0x031382B0> and I suspect this is because the string described in the file handle isn't being inserted in the QFile properly. Can someone please help
The Python open() function doesn't have any knowledge of objects of type QFile. I doubt you actually need to construct a QFile object though.
Instead, just open the file directly via open(self.fileName.text(), 'r'). Preferably, you would do:
with open(self.fileName.text(), 'r') as myfile:
# do stuff with the file
unless you need to keep the file open for a long period of time
I came up with a solution also.
def fileHandle(self):
string = str(self.filename.text())
file = QFile()
file.setFileName(string)
file.open(QIODevice.ReadOnly)
print(file.exists())
line = file.readLine()
print(line)
What this does is that it takes the string of the filename field. Creates the file object. Names the file object the string, and then opens the file. I have exists to check if the file is there, and after reading the test document i have, ti seemed to work as I wanted.
Thanks anyway #three_pineapples, but I'm going to use my solution :P
And again, asking for help. But, before I start, here will be a lot of text, so please sorry for that.
I have about 500~ IP addresses with devices 2x categories in .xlsx book
I want:
telnet to device. Check device (by authentication prompt) type 1 or type 2.
If device is type 1 - get it firmware version in 2x partitions
write in excel file:
column 1 - IP address
column 2 - device type
column 3 - firmware version
column 4 - firmware version in reserve partition.
If type 2 - write in excel file:
column 1 - IP address
column 2 - device type
If device is down, or device type 3(unknown) - write in excel file:
column 1 - IP address
column 2 - result (EOF, TIMEOUT)
What I have done: I'm able to telnet to device, check device type, write in excel with 2 columns (in 1 column IP addresses, in 2 column is device type, or EOF/TIMEOUT results)
And, I'm writing full logs from session to files in format IP_ADDRESS.txt to future diagnosis.
What I can't understand to do? I can't understand how to get firmware version, and put it on 3,4 columns.
I can't understand how to work with current log session in real time, so I've decided to copy logs from main file (IP_ADDRESS.txt) to temp.txt to work with it.
I can't understand how to extract information I needed.
The file output example:
Trying 10.40.81.167...
Connected to 10.40.81.167.
Escape character is '^]'.
####################################
# #
# RADIUS authorization disabled #
# Enter local login/password #
# #
####################################
bt6000 login: admin
Password:
Please, fill controller information at first time (Ctrl+C to abort):
^C
Controller information filling canceled.
^Cadmin#bt6000# firmware info
Active boot partition: 1
Partition 0 (reserved):
Firmware: Energomera-2.3.1
Version: 10117
Partition 1 (active):
Firmware: Energomera-2.3.1_01.04.15c
Version: 10404M
Kernel version: 2.6.38.8 #2 Mon Mar 2 20:41:26 MSK 2015
STM32:
Version: bt6000 10083
Part Number: BT6024
Updated: 27.04.2015 16:43:50
admin#bt6000#
I need values - after "Energomera" words, like 2.3.1 for reserved partition, and 2.3.1_01.04.15c for active partition.
I've tried to work with string numbers and excract string, but there was not any kind of good result at all.
Full code of my script below.
import pexpect
import pxssh
import sys #hz module
import re #Parser module
import os #hz module
import getopt
import glob #hz module
import xlrd #Excel read module
import xlwt #Excel write module
import telnetlib #telnet module
import shutil
#open excel book
rb = xlrd.open_workbook('/samba/allaccess/Energomera_Eltek_list.xlsx')
#select work sheet
sheet = rb.sheet_by_name('IPs')
#rows number in sheet
num_rows = sheet.nrows
#cols number in sheet
num_cols = sheet.ncols
#creating massive with IP addresses inside
ip_addr_list = [sheet.row_values(rawnum)[0] for rawnum in range(sheet.nrows)]
#create excel workbook with write permissions (xlwt module)
wb = xlwt.Workbook()
#create sheet IP LIST with cell overwrite rights
ws = wb.add_sheet('IP LIST', cell_overwrite_ok=True)
#create counter
i = 0
#authorization details
port = "23" #telnet port
user = "admin" #telnet username
password = "12345" #telnet password
#firmware ask function
def fw_info():
print('asking for firmware')
px.sendline('firmware info')
px.expect('bt6000#')
#firmware update function
def fw_send():
print('sending firmware')
px.sendline('tftp server 172.27.2.21')
px.expect('bt6000')
px.sendline('firmware download tftp firmware.ext2')
px.expect('Updating')
px.sendline('y')
px.send(chr(13))
ws.write(i, 0, host)
ws.write(i, 1, 'Energomera')
#if eltek found - skip, write result in book
def eltek_found():
print(host, "is Eltek. Skipping")
ws.write(i, 0, host)
ws.write(i, 1, 'Eltek')
#if 23 port telnet conn. refused - skip, write result in book
def conn_refuse():
print(host, "connection refused")
ws.write(i, 0, host)
ws.write(i, 1, 'Connection refused')
#auth function
def auth():
print(host, "is up! Energomera found. Starting auth process")
px.sendline(user)
px.expect('assword')
px.sendline(password)
#start working with ip addresses in ip_addr_list massive
for host in ip_addr_list:
#spawn pexpect connection
px = pexpect.spawn('telnet ' + host)
px.timeout = 35
#create log file with in IP.txt format (10.1.1.1.txt, for example)
fout = open('/samba/allaccess/Energomera_Eltek/{0}.txt'.format(host),"wb")
#push pexpect logfile_read output to log file
px.logfile_read = fout
try:
index = px.expect (['bt6000', 'sername', 'refused'])
#if device tell us bt6000 - authorize
if index == 0:
auth()
index1 = px.expect(['#', 'lease'])
#if "#" - ask fw version immediatly
if index1 == 0:
print('seems to controller ID already set')
fw_info()
#if "Please" - press 2 times Ctrl+C, then ask fw version
elif index1 == 1:
print('trying control C controller ID')
px.send(chr(3))
px.send(chr(3))
px.expect('bt6000')
fw_info()
#firmware update start (temporarily off)
# fw_send()
#Eltek found - func start
elif index == 1:
eltek_found()
#Conn refused - func start
elif index == 2:
conn_refuse()
#print output to console (test purposes)
print(px.before)
px.send(chr(13))
#Copy from current log file to temp.txt for editing
shutil.copy2('/samba/allaccess/Energomera_Eltek/{0}.txt'.format(host), '/home/bark/expect/temp.txt')
#EOF result - skip host, write result to excel
except pexpect.EOF:
print(host, "EOF")
ws.write(i, 0, host)
ws.write(i, 1, 'EOF')
#print output to console (test purposes)
print(px.before)
#Timeout result - skip host, write result to excel
except pexpect.TIMEOUT:
print(host, "TIMEOUT")
ws.write(i, 0, host)
ws.write(i, 1, 'TIMEOUT')
#print output to console (test purposes)
print(px.before)
#Copy from current log file to temp.txt for editing
shutil.copy2('/samba/allaccess/Energomera_Eltek/{0}.txt'.format(host), '/home/bark/expect/temp.txt')
#count +1 to correct output for Excel
i += 1
#workbook save
wb.save('/samba/allaccess/Energomera_Eltek_result.xls')
Have you have any suggestions or ideas, guys, how I can do this?
Any help is greatly appreciated.
You can use regular expressions
example:
>>> import re
>>>
>>> str = """
... Trying 10.40.81.167...
...
... Connected to 10.40.81.167.
...
... Escape character is '^]'.
...
...
...
... ####################################
... # #
... # RADIUS authorization disabled #
... # Enter local login/password #
... # #
... ####################################
... bt6000 login: admin
... Password:
... Please, fill controller information at first time (Ctrl+C to abort):
... ^C
... Controller information filling canceled.
... ^Cadmin#bt6000# firmware info
... Active boot partition: 1
... Partition 0 (reserved):
... Firmware: Energomera-2.3.1
... Version: 10117
... Partition 1 (active):
... Firmware: Energomera-2.3.1_01.04.15c
... Version: 10404M
... Kernel version: 2.6.38.8 #2 Mon Mar 2 20:41:26 MSK 2015
... STM32:
... Version: bt6000 10083
... Part Number: BT6024
... Updated: 27.04.2015 16:43:50
... admin#bt6000#
... """
>>> re.findall(r"Firmware:.*?([0-9].*)\s", str)
['2.3.1', '2.3.1_01.04.15c']
>>> reserved_firmware = re.search(r"reserved.*\s*Firmware:.*?([0-9].*)\s", str).group(1)
>>> reserved_firmware
'2.3.1'
>>> active_firmware = re.search(r"active.*\s*Firmware:.*?([0-9].*)\s", str).group(1)
>>> active_firmware
'2.3.1_01.04.15c'
>>>
In a ModelForm I can write a clean_<field_name> member function to automatically validate and clean up data entered by a user, but what can I do about dirty json or csv files (fixtures) during a manage.py loaddata?
Fixtures loaded with loaddata are assumed to contain clean data that doen't need validation (usually as an inverse operation to a prior dumpdata), so the short answer is that loaddata isn't the approach you want if you need to clean your inputs.
However, you probably can use some of the underpinnings of loaddata while implementing your custom data cleaning code--I'm sure you can easily script something using the Django serialization libs to read your existing data files them in and the save the resulting objects normally after the data has been cleaned up.
In case others want to do something similar, I defined a model method to do the cleaning (so it can be called from ModelForms)
MAX_ZIPCODE_DIGITS = 9
MIN_ZIPCODE_DIGITS = 5
def clean_zip_code(self, s=None):
#s = str(s or self.zip_code)
if not s: return None
s = re.sub("\D","",s)
if len(s)>self.MAX_ZIPCODE_DIGITS:
s = s[:self.MAX_ZIPCODE_DIGITS]
if len(s) in (self.MIN_ZIPCODE_DIGITS-1,self.MAX_ZIPCODE_DIGITS-1):
s = '0'+s # FIXME: deal with other intermediate lengths
if len(s)>=self.MAX_ZIPCODE_DIGITS:
s = s[:self.MIN_ZIPCODE_DIGITS]+'-'+s[self.MIN_ZIPCODE_DIGITS:]
return s
Then wrote a standalone python script to clean up my legacy json files using any clean_ methods found among the models.
import os, json
def clean_json(app = 'XYZapp', model='Entity', fields='zip_code', cleaner_prefix='clean_'):
# Set the DJANGO_SETTINGS_MODULE environment variable.
os.environ['DJANGO_SETTINGS_MODULE'] = app+".settings"
settings = __import__(app+'.settings').settings
models = __import__(app+'.models').models
fpath = os.path.join( settings.SITE_PROJECT_PATH, 'fixtures', model+'.json')
if isinstance(fields,(str,unicode)):
fields = [fields]
Ns = []
for field in fields:
try:
instance = getattr(models,model)()
except AttributeError:
print 'No model named %s could be found'%(model,)
continue
try:
cleaner = getattr(instance, cleaner_prefix+field)
except AttributeError:
print 'No cleaner method named %s.%s could be found'%(model,cleaner_prefix+field)
continue
print 'Cleaning %s using %s.%s...'%(fpath,model,cleaner.__name__)
fin = open(fpath,'r')
if fin:
l = json.load(fin)
before = len(l)
cleans = 0
for i in range(len(l)):
if 'fields' in l[i] and field in l[i]['fields']:
l[i]['fields'][field]=cleaner(l[i]['fields'][field]) # cleaner returns None to delete records
cleans += 1
fin.close()
after = len(l)
assert after>.5*before
Ns += [(before, after,cleans)]
print 'Writing %d/%d (new/old) records after %d cleanups...'%Ns[-1]
with open(fpath,'w') as fout:
fout.write(json.dumps(l,indent=2,sort_keys=True))
return Ns
if __name__ == '__main__':
clean_json()