I have been going in circles for hours.
I am trying to get the dropdown output to loop, to ensure the result is correct.
I get the dropdown list, but the "output" is none.
If I select 'DEV' or "DEV", it prints DEV. The output (w) is none and the loop exits at else not if??
The python code (jypter):
source = ["Select Source", "DEV", "TEMP", "PROD"]
source_ = widgets.Dropdown(
options=source,
value=source[0],
description='Select variable:',
disabled=False,
button_style=''
)
def sourceURL(b):
clear_output()
print(source_.value)
### Drop Down
print("Drop Down")
display(source_)
w = source_.observe(sourceURL)
## print("output: ")
print(w) ### output is None
#### LOOP
if w == 'DEV':
print("This is Dev")
elif w == "TEST":
print("This is TEST")
else:
print("This is PROD")
When you do source_.observe(sourceURL), there is no return value from this call. Hence this is equivalent to w = None.
To get the behaviour you want, I think you would need to move the code at the end of your script into your sourceURL function.
import ipywidgets as widgets
from IPython.display import clear_output
source = ["DEV", "TEMP", "PROD"]
source_ = widgets.Dropdown(
options=source,
value=source[0],
description='Select variable:',
disabled=False,
button_style=''
)
def sourceURL(b):
# clear_output()
w = b['new']
if w == 'DEV':
print("This is Dev")
elif w == "TEMP":
print("This is TEMP")
else:
print("This is PROD")
### Drop Down
print("Drop Down")
display(source_)
w = source_.observe(sourceURL, names='value')
Related
I am trying to create a programme that allows me to add, remove, amend and display details. I have created a general class and an additional class, that allowed me to hold an empty list and add/remove details.
I am now struggling with my menu and how to add further details and display these. Can anyone help, please?
from AircraftInspection_2 import AircraftInspection_2
from RoutineInspection import RoutineInspection
inspection = RoutineInspection()
end_of_add_String = "X to return to main menu\n"
def display_inspection_inventory():
#if inspection.number_of_aircrafts == 0
#return
print (f'{"SN":>3} {"TN":<7} {"AFhrs":<7} {"Zone":<3} {"Corrosion":<3} {"Component":<8} {"Fault":<8} {"Actionalbe":<5}')
for count aircraft in enumerate(inspection.aircrafts):
print(f'{count + 1:>3} {aircraft.Serial_Number:>3} {aircraft.Tail_No:<7} {aircraft.AF_hrs:<7} {aircraft.Zone:<3} {aircraft.Corrosion:<3} {aircraft.Component:<8} {aircraft.Fault:<8} {aircraft.Actionable:<5}')
def menu_options():
print("Menu: ")
print("Key A - Add details.")
print("Key R - Remove details.")
print("Key C - Change details.")
print("Key D - Display details.")
print("Key X - Exit the programme")
print(" ")
menu_options()
def menu_choice():
letters = {"a", "r", "c", "d", "x"}
select = input()
while any(letter in letters for letter in select) and len(select) == 1:
pass
return select
#menu_choice()
def add_aircraft():
aircraft = get_aircraft_details()
try:
routineinspection.add(aircraft)
except ValueError as e:
print(f"{str(e)}")
def get_aircraft_details():
Tail_No = input("Please enter tailnumber: ")
AF_hours = int(input("Enter airframe hours: "))
Zone = input("Enter inspected zone: ")
Corrosion = int(input("Enter corrosion level: "))
Component = input("Enter inspected component: ")
Fault = input("Enter type of fault: ")
Actionable = bool(input("Enter 1 if actionable, 0 if not: "))
aircraft = Aircraft(Tail_No = Tail_No, AF_hours = AF_hours, Zone = Zone, Corrosion = Corrosion, Component = Component, Fault = Fault, Actionable = Actionable)
return aircraft
def remove_aircraft():
routineinspection.remove(aircraft)
while True:
display_inspection_inventory()
menu_options()
menu_choice()
option = menu_choice().upper()
if option == "A":
add_aircraft()
elif option == "R":
remove_aircraft()
#elif option =="C":
#amend_aircraft()
elif option == "X":
confirm = input("Do you want to quit the programme, y or n?").lower()
if confirm == "y":
break
else:
pass
print("See you again soon.")
I am creating a program that allows a user to make a custom dice, but when I open a GUI window with a button that calls the backend dice roll logic, it breaks. In other words, the window doesn't open, and the code just runs in the terminal. It doesn't happen when the button is clicked like I want it to, instead when I run the code, it doesn't open any GUI window and the code executes in the terminal. The code works without the GUI, and if i take out the dice button callback, the GUI works but together it doesn't.
Any help is appreciated!
import random
import tkinter as tk
def dice_roll():
dice = []
x = 0
# used to check if the input is a whole number, if it isn't, you get a message
while True:
while x == 0:
try:
SIDE_AMT = int(input("How many sides would you like? (min is 2, max is infinite): ")) # amt is amount
x = 1
except ValueError:
print("Sorry it has to be a whole number.")
if SIDE_AMT > 1:
for side in range(SIDE_AMT):
print(f"What would you like side {side + 1} to be?:")
dice.append(str(input()))
break
else:
print("You can't have a dice with one side!")
x = 0
# roll function
def roll():
dice_side = random.choice(dice)
print(f"I choose {dice_side}!")
roll_num = 0
while True:
if roll_num == 0:
spin_it = str(input("Type 'roll' if you would like to roll the dice: "))
if spin_it == "roll":
roll()
else:
print("Sorry, you have to type roll correctly.")
roll_num += 1
elif roll_num == 1:
while True:
spin_it = str(input("Type 'roll' if you would like to roll the dice again!: "))
if spin_it == "roll":
roll()
else:
print("Sorry, you have to type roll correctly.")
if __name__ == '__main__':
gui = tk.Tk()
gui.title("Dice Roll")
gui.geometry("1912x1090")
gui.configure(bg='#a2a2a1', borderwidth=5,
relief="raised")
# title
title = tk.Label(gui, text='Unique Dice', font=("Times
New Roman", 52))
title.configure(bg='#a2a2a1', fg='#195190',
borderwidth=3, relief='raised')
# make a dice?
dice = tk.Button(gui,
text="Yes!",
fg="red",
command=dice_roll())
no_dice = tk.Button(gui,
text="No",
fg="red",
command=quit)
# frame = tk.Frame(gui, height=200, width=200)
# frame['borderwidth'] = 10
# frame['relief'] = 'sunken'
# frame.pack()
dice.pack()
no_dice.pack()
title.pack()
gui.mainloop()
you may want to do something like this:
import tkinter as tk
from random import choice
root = tk.Tk()
root.geometry('400x600')
root.resizable(False, False)
root.config(bg='light blue')
dice_numbers = [1, 2, 3, 4, 5, 6]
rolled_nums = []
def roll():
if len(rolled_nums):
rolled_nums[0].pack_forget()
rolled_nums.pop(0)
chosen_number = choice(dice_numbers)
text = tk.Label(root, text=f'{chosen_number}',
font='arial 500 bold', bg='light blue')
text.pack()
rolled_nums.append(text)
button = tk.Button(root, text='Roll Dice!', font='arial 20 bold', relief='raised', width='300',
bg='dark red', fg='black', command=lambda: roll())
button.pack()
root.mainloop()
fell free to adjust this code and if you have questions -> ask
I would like to set up a trading bot via Google Cloud to run around the clock.
In Google Cloud Functions I use the Inline editor with runtime Python 3.7.
I have two questions:
1) Main.py section: Here I copied the full code of my Python script (Trading Bot) - see code below for reference (which works well when run as a script in my IDE Spyder).
However, below Google asks to provide a function to execute. However, my code is just a script with no main function. Can I just put at the top of the code e.g.: "def trading_bot(self):" and indent the remaining part below?
While the code as a script copied below works well, if I add the "def trading_bot(self):" at the top in my IDE (Spyder), the code doesnt seem to work properly...How can I make sure the code within the function runs properly, when I call the function from Google Cloud (or from my IDE).
2) Requirements.txt section: Can you provide guidance what exactly I need to put there, i.e. can I look up the dependencies used in my code somewhere? I use Anaconda for distribution, the classes imported for the script are at the top of the script provided below.
Thanks for any help. Glad also for your advice if you think Google Cloud Functions is not the best approach to run a trading bot but it seemed to me to be the simplest solution.
import bitmex
import json
from time import sleep
from bitmex_websocket import BitMEXWebsocket
import logging, time, requests
import numpy as np
import pandas as pd
import matplotlib.dates as mdates
import matplotlib.pyplot as plt
import warnings
warnings.filterwarnings("ignore")
from datetime import datetime
import math
from statistics import mean
#-------------------------
#variable
symbol = "XBTUSD"
#standard API connection
api_key = "XXX"
api_secret = "XXX"
#True for testnet
client = bitmex.bitmex(test=False, api_key=api_key, api_secret=api_secret)
#------------------
# Trading algorithm
symbol = "XBTUSD"
ordType = 'Stop'
#starting order quantity
orderQty = 1
leftBars = 6
rightBars = 2
#round to 0.5
def round_to_BTC(n):
result = round(n*2)/2
return result
t=1
while t < 1000000:
time_now = (time.strftime('%H:%M:%S', time.localtime(int(time.time()))))
t_now = time_now[6:8]
t1 = "00"
t2 = "59"
FMT = '%S'
def days_hours_minutes_seconds(td):
return td.days, td.seconds//3600, (td.seconds//60)%60, td.seconds
if t_now == str('00'):
#give 1 second to candlestick to properly close
sleep(1)
elif t_now > str('00') and t_now <= str('59'):
s1 = datetime.strptime(t2, FMT) - datetime.strptime(t_now, FMT)
s1_seconds = days_hours_minutes_seconds(s1)[3]+2
sleep(s1_seconds)
else:
pass
time_now = (time.strftime('%H:%M:%S', time.localtime(int(time.time()))))
print("The time is now: " + time_now)
#most recent swing candles, get highs and lows / #binsizes = {"1m": 1, "5m": 5, "1h": 60, "1d": 1440}
#+1 is the middle bar
totalBars = leftBars + rightBars + 1
swing_candles = client.Trade.Trade_getBucketed(symbol=symbol, binSize="1m", count=totalBars, reverse=True).result()[0]
last_highs = []
last_lows = []
i=0
while i <= (len(swing_candles)-1):
last_highs.append(swing_candles[i]["high"])
last_lows.append(swing_candles[i]["low"])
i += 1
#get the highest high and the lowest low
highest_high = max(last_highs)
lowest_low = min(last_lows)
#check if there are existing positions & orders
if client.Position.Position_get().result()[0] != []:
positions_quantity = client.Position.Position_get().result()[0][0]["currentQty"]
else:
positions_quantity = 0
#check existing orders
buy_orders_quantity = []
sell_orders_quantity = []
orders_quantity = client.Order.Order_getOrders(filter=json.dumps({"open": True})).result()[0]
h=0
while h <= len(orders_quantity)-1:
if orders_quantity[h]["side"] == "Sell":
sell_orders_quantity.append(orders_quantity[h])
elif orders_quantity[h]["side"] == "Buy":
buy_orders_quantity.append(orders_quantity[h])
h += 1
if highest_high == last_highs[rightBars] and positions_quantity == 0:
if buy_orders_quantity == []:
client.Order.Order_new(symbol = symbol, orderQty = orderQty*1, side = "Buy", ordType = 'Stop', stopPx = (highest_high+0.5), execInst ='LastPrice' ).result()
elif buy_orders_quantity != []:
orderID = buy_orders_quantity[0]["orderID"]
client.Order.Order_amend(orderID=orderID, orderQty=orderQty*1, stopPx = (highest_high+0.5)).result()
else:
pass
elif highest_high == last_highs[rightBars] and positions_quantity > 0:
#dont place any additional long
pass
elif highest_high == last_highs[rightBars] and positions_quantity < 0:
if buy_orders_quantity != []:
orderID = buy_orders_quantity[0]["orderID"]
client.Order.Order_amend(orderID=orderID, orderQty=orderQty*2, stopPx = (highest_high+0.5)).result()
else:
client.Order.Order_new(symbol = symbol, orderQty = (orderQty)*2, side = "Buy", ordType = 'Stop', stopPx = (highest_high+0.5), execInst ='LastPrice' ).result()
elif lowest_low == last_lows[rightBars] and positions_quantity == 0:
if sell_orders_quantity == []:
client.Order.Order_new(symbol = symbol, orderQty = (orderQty)*-1, side = "Sell", ordType = 'Stop', stopPx = (lowest_low-0.5), execInst ='LastPrice' ).result()
elif sell_orders_quantity != []:
orderID = sell_orders_quantity[0]["orderID"]
client.Order.Order_amend(orderID=orderID, orderQty=orderQty*-1, stopPx = (lowest_low-0.5)).result()
else:
pass
elif lowest_low == last_lows[rightBars] and positions_quantity < 0:
#dont place any additional shorts
pass
elif lowest_low == last_lows[rightBars] and positions_quantity > 0:
if sell_orders_quantity != []:
orderID = sell_orders_quantity[0]["orderID"]
client.Order.Order_amend(orderID=orderID, orderQty=orderQty*-2, stopPx = (lowest_low-0.5)).result()
else:
client.Order.Order_new(symbol = symbol, orderQty = (orderQty)*-2, side = "Sell", ordType = 'Stop', stopPx = (lowest_low-0.5), execInst ='LastPrice' ).result()
positions_quantity = client.Position.Position_get().result()[0][0]["currentQty"]
buy_orders_quantity = []
sell_orders_quantity = []
orders_quantity = client.Order.Order_getOrders(filter=json.dumps({"open": True})).result()[0]
h=0
while h <= len(orders_quantity)-1:
if orders_quantity[h]["side"] == "Sell":
sell_orders_quantity.append(orders_quantity[h])
elif orders_quantity[h]["side"] == "Buy":
buy_orders_quantity.append(orders_quantity[h])
h += 1
if positions_quantity > 0:
if sell_orders_quantity != []:
orderID = sell_orders_quantity[0]["orderID"]
client.Order.Order_amend(orderID=orderID, orderQty=orderQty*-2).result()
elif positions_quantity < 0:
if buy_orders_quantity != []:
orderID = buy_orders_quantity[0]["orderID"]
client.Order.Order_amend(orderID=orderID, orderQty=orderQty*2).result()
print("Your current position is " + str(positions_quantity))
print("This is iteration: " + str(t))
t += 1
As concerns my second question, I solved it in the following way:
In the command terminal, type: pip freeze > requirements.txt
The file contains all dependencies.
As concerns question 1 I still dont understand what code exactly needs to be put in the section main.py.
Thanks!
Cloud Functions is not an adequate product for your use case. They are mostly used for lightweight calculations or not high resource consuming methods.
The magic of CF consists in that they execute your code whenever you hit the URL that belongs to it. This is important to understand for your question number 1. If you want your function to work, you need to always create a method that accepts the "request" parameter. As it is the information from the HTTP request made when the URL is hit.
You can take a look at this document for reference.
You function should always start like this
from flask #import your dependencies
def my_awesome_function(request):
#Your logic
In this case you should write "my_awesome_function" on the Function to Execute textbox.
You also have to be careful with your resources, as CF have 5 presentations. They differ in CPU and Memory you can read more about this here.
This, among many reasons, you should not use Cloud Functions for your bot. I could recommend you to use a virtual machine, but activities related to use of the Services for cryptocurrency mining without Google's prior written approval are frowned upon and may result in the deactivation of your product as stated in the terms of service.
I was wondering how to open or read a binary file that has been saved in octave, with the extension .SAVE? I have tried opening it with MATLAB, using the 'load' function in octave, but nothing seems to be working. I'm trying to understand someone else's code and they have saved the output of a simulation in this file.
The Octave binary format is briefly described in the comments before the function read_binary_data() in load-save.cc.
Are you sure the file is in "Octave binary format". The file ending ".SAVE" can be choosen arbitrary so this could also be CSV, gzipped...
You can run "file yourfile.SAFE" and paste the output or check the first bytes of your file if they are "Octave-1-L" or "Octave-1-B".
If you want to use these files from another program than GNU Octave I would suggest loading it in Octave and safe it in an other format. See "help save" for a list of supported formats.
EDIT:
Because the initial poster asked: Of course you can use GNU Octave from the terminal (no need for the GUI and I don't now to which software part you refer when you are using the phrase "octave GUI", see here Octave FAQ). Just install it for your used platform install instructions on wiki.octave.org and run it.
Code for reading octave binary save files in python 2/3.
Tested on:
strings
single and double precision real and complex floats
various integer types
scalar, matrix and array
Unsupported:
struct
cell array
...
Python code:
# This code is public domain
from __future__ import print_function
import sys
from collections import OrderedDict
import numpy as np
if sys.version_info[0] > 2:
def tostr(s):
return s.decode('utf8')
def decode(s, encoding='utf8'):
return s.decode(encoding)
STR_ENCODING = 'utf8'
else:
def tostr(s):
return s
def decode(s, encoding='utf8'):
return unicode(s, encoding)
STR_ENCODING = None
DATA_TYPES = {
1: "scalar",
2: "matrix",
3: "complex scalar",
4: "complex matrix",
5: "old_string",
6: "range",
7: "string",
}
TYPE_CODES = {
0: "u1",
1: "u2",
2: "u4",
3: "i1",
4: "i2",
5: "i4",
6: "f4",
7: "f8",
8: "u8",
9: "i8",
}
DTYPES = {k: np.dtype(v) for k, v in TYPE_CODES.items()}
def loadoct(fd, encoding=STR_ENCODING):
"""
Read an octave binary file from the file handle fd, returning
an array of structures. If encoding is not None then convert
strings from bytes to unicode. Default is STR_ENCODING, which
is utf8 for python 3 and None for python 2, yielding arrays
of type str in each dialect.
"""
magic = fd.read(10)
assert(magic == b"Octave-1-L" or magic == b"Octave-1-B")
endian = "<" if magic[-1:] == b"L" else ">"
# Float type is 0: IEEE-LE, 1: IEEE-BE, 2: VAX-D, 3: VAX-G, 4: Cray
# Not used since Octave assumes IEEE format floats.
_float_format = fd.read(1)
len_dtype = np.dtype(endian + "i4")
def read_len():
len_bytes = fd.read(4)
if not len_bytes:
return None
return np.frombuffer(len_bytes, len_dtype)[0]
table = OrderedDict()
while True:
name_length = read_len()
if name_length is None: # EOF
break
name = tostr(fd.read(name_length))
doc_length = read_len()
doc = tostr(fd.read(doc_length)) if doc_length else ''
is_global = bool(ord(fd.read(1)))
data_type = ord(fd.read(1))
if data_type == 255:
type_str = tostr(fd.read(read_len()))
else:
type_str = DATA_TYPES[data_type]
#print("reading", name, type_str)
if type_str.endswith("scalar"):
if type_str == "scalar":
dtype = DTYPES[ord(fd.read(1))]
elif type_str == "complex scalar":
_ = fd.read(1)
dtype = np.dtype('complex128')
elif type_str == "float complex scalar":
_ = fd.read(1)
dtype = np.dtype('complex64')
else:
dtype = np.dtype(type_str[:-7])
dtype = dtype.newbyteorder(endian)
data = np.frombuffer(fd.read(dtype.itemsize), dtype)
table[name] = data[0]
elif type_str.endswith("matrix"):
ndims = read_len()
if ndims < 0:
ndims = -ndims
dims = np.frombuffer(fd.read(4*ndims), len_dtype)
else:
dims = (ndims, read_len())
count = np.prod(dims)
if type_str == "matrix":
dtype = DTYPES[ord(fd.read(1))]
elif type_str == "complex matrix":
_ = fd.read(1)
dtype = np.dtype('complex128')
elif type_str == "float complex matrix":
_ = fd.read(1)
dtype = np.dtype('complex64')
else:
dtype = np.dtype(type_str[:-7])
dtype = dtype.newbyteorder(endian)
data = np.frombuffer(fd.read(count*dtype.itemsize), dtype)
# Note: Use data.copy() to make a modifiable array.
table[name] = data.reshape(dims, order='F')
elif type_str == "old_string":
data = fd.read(read_len())
if encoding is not None:
data = decode(data, encoding)
table[name] = data
elif type_str in ("string", "sq_string"):
nrows = read_len()
if nrows < 0:
ndims = -nrows
dims = np.frombuffer(fd.read(4*ndims), len_dtype)
count = np.prod(dims)
fortran_order = np.frombuffer(fd.read(count), dtype='uint8')
c_order = np.ascontiguousarray(fortran_order.reshape(dims, order='F'))
data = c_order.view(dtype='|S'+str(dims[-1]))
if encoding is not None:
data = np.array([decode(s, encoding) for s in data.flat])
table[name] = data.reshape(dims[:-1])
else:
data = [fd.read(read_len()) for _ in range(nrows)]
if encoding is not None:
data = [decode(s, encoding) for s in data]
table[name] = np.array(data)
else:
raise NotImplementedError("unknown octave type "+type_str)
#print("read %s:%s"%(name, type_str), table[name])
return table
def _dump(filename, encoding=STR_ENCODING):
import gzip
if filename.endswith('.gz'):
with gzip.open(filename, 'rb') as fd:
table = loadoct(fd, encoding)
else:
with open(filename, 'rb') as fd:
table = loadoct(fd, encoding)
for k, v in table.items():
print(k, v)
if __name__ == "__main__":
#_dump(sys.argv[1], encoding='utf8') # unicode
#_dump(sys.argv[1], encoding=None) # bytes
_dump(sys.argv[1]) # str, encoding=STR_ENCODING
I am working my way through the book Core Python Programming. Exercise 2_11 instructed to build a menu system that had allowed users to select and option which would run an earlier simple program. the menu system would stay open until the user selected the option to quit. Here is my first working program.
programList = {1:"menu system",
2:"for loop count 0 to 10",
3:"positive or negative",
4:"print a string, one character at a time",
5:"sum of a fixed tuple",
"x":"quit()",
"menu":"refresh the menu"}
import os
for x in programList:
print(x,":",programList[x])
while True:
selection = input("select a program: ")
if selection == "1":
os.startfile("cpp2_11.py")
elif selection == "2":
os.startfile("cpp2_5b.py")
elif selection == "3":
os.startfile("cpp2_6.py")
elif selection == "4":
os.startfile("cpp2_7.py")
elif selection == "5":
os.startfile("cpp2_8.py")
elif selection == "menu":
for x in range(8): print(" ")
for x in programList:print(x,":",programList[x])
elif selection == "X":
break
elif selection == "x":
break
else:
print("not sure what you want")
input()
quit()
This version worked fine, but I wanted to use the a dictionary as a case/switch statement to clean up the ugly if/elif/else lines.
Now I'm stuck. I'm using Eclipse with PyDev and my new code is throwing an error:
Duplicated signature:!!
Here's a copy of my current code:
import os
def '1'():
os.startfile("cpp2_11.py")
def '2'():
os.startfile("cpp2_5b.py")
def '3'():
os.startfile("cpp2_6.py")
def '4'():
os.startfile("cpp2_7.py")
def '5'():
os.startfile("cpp2_8.py")
def 'm'():
for x in range(8): print(" ")
for x in actions:print(x,":",actions[x])
def 'x'():
quit()
def errhandler():
else:
print("not sure what you want")
actions = {1:"menu system",
2:"for loop count 0 to 10",
3:"positive or negative",
4:"print a string, one character at a time",
5:"sum of a fixed tuple",
"X":"quit()",
"menu":"refresh the menu"}
for x in actions:
print(x,":",actions[x])
selectedaction = input("please select an option from the list")
while True:
actions.get(selectedaction,errhandler)()
input()
quit()
I'm pretty sure that my current problem (the error codes) are related to the way I'm trying to use the os.startfile() in the functions. Maybe I'm way off. Any help is appreciated.
EDIT: I am changing the title to make it more useful for future reference. After a helpful comment from Ryan pointing out the simple error in function naming, I was able to piece together a script that works. sort of...Here it is:
import os
def menu_system():
os.startfile("cpp2_11alt.py")
def loopCount_zero_to_ten():
os.startfile("cpp2_5b.py")
def positive_or_negative():
os.startfile("cpp2_6.py")
def print_a_string_one_character_at_a_time():
os.startfile("cpp2_7.py")
def sum_of_a_tuples_values():
os.startfile("cpp2_8.py")
def refresh_the_menu():
for x in range(4): print(" ")
for y in actions:print(y,":",actions[y])
for z in range(2): print(" ")
def exit_the_program():
quit()
def errhandler():
print("not sure what you want")
actions = {'1':menu_system,
'2':loopCount_zero_to_ten,
'3':positive_or_negative,
'4':print_a_string_one_character_at_a_time,
'5':sum_of_a_tuples_values,
'x':exit_the_program,
'm':refresh_the_menu}
for item in actions:
print(item,":",actions[item])
for z in range(2): print(" ")
selectedaction = input("please select an option from the list: ")
while True:
actions.get(selectedaction,errhandler)()
selectedaction = input("please select an option from the list: ")
quit()
There were many problems with the second attempt. I was referencing the dictionary key instead of the value when calling functions. I also had some bugs in the way the menu printed and handled input values. Now all I need to do is figure out how to get the dictionary values to print without all of the extra information:
This is the output when I print the menu:
2 : <function loopCount_zero_to_ten at 0x027FDA08>
3 : <function positive_or_negative at 0x027FD810>
1 : <function menu_system at 0x027FD978>
4 : <function print_a_string_one_character_at_a_time at 0x027FD930>
5 : <function sum_of_a_tuples_values at 0x027FD780>
x : <function exit_the_program at 0x027FD858>
m : <function refresh_the_menu at 0x027FD7C8>
AND how to get the menu to print in numeric order.
Once again, any help is appreciated.
I finally found a solution to the problem of sorting a dictionary and printing the function names as a string. In the last part of the edited question (3rd code section), I had the fixed code for the question that started this post: how to use integers in a dictionary to create a menu - with the intention of creating a switch/case style alternative and avoiding the ugly if/elif/else problems in the first code section.
Here's the final version of the working code:
import os
def menu_system():
os.startfile("cpp2_11alt.py")
def loopCount_zero_to_ten():
os.startfile("cpp2_5b.py")
def positive_or_negative():
os.startfile("cpp2_6.py")
def print_a_string_one_character_at_a_time():
os.startfile("cpp2_7.py")
def sum_of_a_tuples_values():
os.startfile("cpp2_8.py")
def refresh_the_menu():
for x in range(4): print(" ")
for key in sorted(actions):
print (key, '=>', actions[key].__name__)
for z in range(2): print(" ")
def exit_the_program():
quit()
def errhandler():
print("not sure what you want")
actions = {'1':menu_system,
'2':loopCount_zero_to_ten,
'3':positive_or_negative,
'4':print_a_string_one_character_at_a_time,
'5':sum_of_a_tuples_values,
'x':exit_the_program,
'm':refresh_the_menu}
for key in sorted(actions):
print (key, '=>', actions[key].__name__)
selectedaction = input("please select an option from the list: ")
while True:
actions.get(selectedaction,errhandler)()
selectedaction = input("please select an option from the list: ")
quit()
adding the .__name__ method allowed me to print the function names as a string.
Using the for loop:
for key in sorted(actions):
print (key, '=>', actions[key].__name__)
created the ability to sort the dictionary.