Python Infinite While循环不一致

Question

我用Python为无限循环编写的代码第一次运行良好。然而，它在第二次运行时会给出以下消息：

追踪(最近一次通话(：文件"；C：/Users/dell/PycharmProjects/pythonProject/main.py"；，第27行，insymbol=str(symbol(TypeError:"tuple"对象不可调用

你知道为什么我在第二次跑步后没有收到这个消息吗？

from xlrd import open_workbook
import win32com.client as win32
from oandapyV20.contrib.requests import MarketOrderRequest
from oandapyV20.contrib.requests import TakeProfitDetails, StopLossDetails
import oandapyV20.endpoints.orders as orders
import oandapyV20
from oandapyV20 import API
import oandapyV20.endpoints.accounts as accounts
import oandapyV20.endpoints.pricing as pricing
import oandapyV20.endpoints.positions as positions
import easygui
import tkinter as tk
import time
while True:
time.sleep(5)
excel = win32.gencache.EnsureDispatch('Excel.Application')
for wb in excel.Workbooks:
if wb.Name == 'forex2.xlsx':
wb.Save()
wb = open_workbook('C:/Users/dell/Documents/forex2.xlsx')
xl_sheet = wb.sheet_by_index(0)
marginrate = xl_sheet.cell(1, 2)
symbol = xl_sheet.cell(1, 1)
symbol = str(symbol)
marginrate = str(marginrate)
symbol = symbol.replace("text:", "")
marginrate = 20
symbol = symbol.replace("'", "")
print("Symbol:", symbol)
print("Margin Rate:", marginrate)
access_token = "XXXX"
accountID = "XXXX"
client = API(access_token=access_token)
r = accounts.AccountDetails(accountID)
client.request(r)
dict = r.response
params = {"instruments": symbol}
r2 = pricing.PricingInfo(accountID=accountID, params=params)
rv2 = client.request(r2)
a = list(rv2.items())[1][1][0]
ask = float(a['closeoutAsk'])
print("Starting Ask:", ask)
a = list(dict.items())[0][1]
marginUsed = float(list(a.items())[25][1])
marginAvailable = float(list(a.items())[26][1])
balance = float(list(a.items())[9][1])
print("Margin Available:", marginAvailable)
print("Balance:", balance)
print("Margin Used + Margin Available:", balance)
STOP_LOSS = .001
TAKE_PROFIT = 100000
units0 = round((marginrate * marginAvailable) / ask * .95)
print("Order Units:", units0)
mktOrder = MarketOrderRequest(
instrument=symbol,
units=units0,
takeProfitOnFill=TakeProfitDetails(price=TAKE_PROFIT).data,
stopLossOnFill=StopLossDetails(price=STOP_LOSS).data)
r = orders.OrderCreate(accountID, data=mktOrder.data)
try:
rv = client.request(r)
except oandapyV20.exceptions.V20Error as err:
print("")
print("UNITS_INVALID")
else:
print("")
excel = win32.gencache.EnsureDispatch('Excel.Application')
for wb in excel.Workbooks:
if wb.Name == 'forex2.xlsx':
wb.Save()
book = open_workbook('C:/Users/dell/Documents/forex2.xlsx')
r = positions.PositionList(accountID=accountID)
client.request(r)
dict = r.response
a = list(dict.items())[0][1]
for i, element in enumerate(a):
long = a[i]
long2 = long['long']
symbol = long['instrument']
try:
averagePrice = long2['averagePrice']
except:
pass
else:
window = tk.Tk()
frame_a = tk.Frame()
label_a = tk.Label(master=frame_a, text="Hello")
label_a.pack()
frame_a.pack()
for sheet in book.sheets():
for rowidx in range(sheet.nrows):
row = sheet.row(rowidx)
for colidx, cell in enumerate(row):
if cell.value == symbol:
row = rowidx + 3
current_bid = sheet.cell(1, row)
current_bid = str(current_bid)
current_bid = float(current_bid.replace("number:", ""))
str = "Beginning Balance:", balance, "Current Bid:", current_bid, "Average Price:", averagePrice, "Current Profit:", round(
(current_bid - float(averagePrice)) * units0, 2)
print(str)
data = {"longUnits": "ALL"}
r = positions.PositionClose(accountID=accountID, instrument=symbol, data=data)
client.request(r)

Answer 1

问题在于您使用
str = "Beginning Balance:", balance, "Current Bid:", current_bid, "Average Price:", averagePrice, "Current Profit:", round((current_bid - float(averagePrice)) * units0, 2)
，它将函数str替换为您在此处分配的变量。尝试替换这个变量的名称，它应该可以正常工作。