python - Issue calling functions with argparse -


i'm having issues calling functions command line argparse. want execute 1 of functions defined in script.

import os import shutil import getpass import argparse   user = getpass.getuser() copyfolders = ['favorites']  parser = argparse.argumentparser() parser.add_argument('e', action='store') parser.add_argument('i', action='store') args = parser.parse_args()   def exp(args):     folder in copyfolders:         c_path = os.path.join("c:", "/", "users", user, folder)         l_path = os.path.join("l:", "/", "backup", folder)         shutil.copytree(c_path, l_path)  def imp(args):     folder in copyfolders:         l_path = os.path.join("l:", "/", "backup", folder)         c_path = os.path.join("c:", "/", "users", user, folder)         shutil.copytree(l_path, c_path)

when try call argument get:

error follow arguments required: i

no matter argument passed.

a couple of problems here:

  1. you can't use action call defined function directly. however, can set boolean variable value using action='store_true' , define logic when variable true (or false)
  2. your functions have defined before call them in script.

this ended working me:

def exp(arg):     #replace below logic     print("in exp %s" % arg)  def imp(arg):     #replace below logic     print("in imp %s" % arg)  user = getpass.getuser() copyfolders = ['favorites']  parser = argparse.argumentparser()  #make sure prefix abbreviated argument name - , full name -- parser.add_argument('-e', '--exp', action='store_true', required=false) parser.add_argument('-i', '--imp', action='store_true', required=false) args = parser.parse_args()  isexp = args.exp isimp = args.imp  if isexp:     exp("foo")  if isimp:     imp("bar")

also, make sure prefix abbreviated argument name - , full name --.


Comments

Post a Comment

Popular posts from this blog

android - InAppBilling registering BroadcastReceiver in AndroidManifest -

i'm implementing inapp billing in android app. works well, however, i'm trying decouple broadcast receiver activity manifest. suggestion in android's trivialdrive sample: // important: dynamically register broadcast messages updated purchases. // register receiver here instead of <receiver> in manifest // because call getpurchases() @ startup, therefore can ignore // broadcasts sent while app isn't running. // note: registering listener in activity bad idea, done here // because sample. regardless, receiver must registered after // iabhelper setup, before first call getpurchases(). currently there's class extends broadcastreceiver : public class iabbroadcastreceiver extends broadcastreceiver { /** * intent action receiver should filter for. */ public static final string action = "com.android.vending.billing.purchases_updated"; private final iabbroadcastlistener mlistener; public iabbroadcastreceiver(iabbroadcastlistener listener) { m...
Read more

python Tkinter Capturing keyboard events save as one single string -

is possible store keyboard events 1 string? code below stores 1 char , prints it. card reader or bar code reader, contains collection of character/ string not 1 character @ time. goal save char pressed text variable. from tkinter import * root = tk() def key(event): text= event.char text+= event.char print ("pressed", text) def callback(event): frame.focus_set() print ("clicked at", event.x, event.y) frame = frame(root, width=100, height=100) frame.bind("<key>", key) frame.bind("<button-1>", callback) frame.pack() root.mainloop() currently, creating text variable , everytime key() function gets called, , text stores last character typed. you can define text module level variable , , use module level text inside key function - text = '' def key(event): global text text+= event.char print("pressed", text)
Read more

sql server - Why does Linq-to-SQL add unnecessary COUNT()? -

here tables: create table customer ( cid int primary key, name varchar(32) ) create table ord ( oid int primary key, cid int foreign key references customer, address varchar(20) ) here's linq-to-sql statement: var aaa = c in db.customer select new { c, o = c.ord.tolist() }; and here's inexplicable query generated linq-to-sql: select [t0].[cid] [cid], [t0].[name] [name], [t1].[oid] [oid], [t1].[cid] [cid2], [t1].[address] [address], (select count(*) [dbo].[ord] [t2] [t2].[cid] = [t0].[cid]) [value] [dbo].[customer] [t0] left outer join [dbo].[ord] [t1] on [t1].[cid] = [t0].[cid] order [t0].[cid], [t1].[oid] i want understand how rid of count(*) part. it's entirely uncalled for! linq needs count(*) in order determine number of entries returned o = c.ord.tolist() .
Read more