isinstance不輸出任何內容

當使用isinstance時，我的代碼不輸出任何東西。這顯示在代碼的最後。我嘗試輸入year 1和tla_2=1，並沒有輸出。我的isinstance聲明是錯誤的。我是否錯誤地循環？isinstance不輸出任何內容

output = 'From Bus #: {}\tTo Bus #: {}\tTo Bus #: {}\t Area Station: {}\t VMIN: {} pu\tVMAX: {} pu\t' 
print(output.format(from_, to,name2, min_value, max_value,last_bus))

Excel Sheet

from __future__ import print_function 
import os.path 
import win32com.client 

#--------------------------------------------------------------------------------------------------------------------- 
xlApp = win32com.client.DispatchEx('Excel.Application') # Running Excel 
xlsPath = os.path.expanduser('C:\Users\RoszkowskiM\Desktop\UPDATED_LOAD_FORECAST_4.xlsm')# Reading xlsm file 
wb = xlApp.Workbooks.Open(Filename=xlsPath) # Opening file 
xlApp.Run('csvfile2')# Running macro---- csvfile2 is the macro name. It is under the "csv" module in the VBA editor 
wb.Save() 
xlApp.Quit() 
#--------------------------------------------------------------------------------------------------------------------- 
# WHEN RUNNING THE PROGRAM, MAKE SURE THE CSV FILE IS NOT OPEN. 

# THIS WILL PRODUCE AN ERROR WITH READING AND RUNNING THE MACRO. 

# THE EXCEL WORKBOOK CAN BE OPEN WHEN RUNNING THE PROGRAM 


import os, sys 
#-------------------------------------------------------------------------- 
#PSSE_LOCATION = r"C:\Program Files (x86)\PTI\PSSE33\PSSBIN" #Locating PSSE 
#sys.path.append(PSSE_LOCATION) 
#os.environ['PATH'] = os.environ['PATH'] + ';' + PSSE_LOCATION 
#-------------------------------------------------------------------------- 


#---------------------------------------------------------------------------------------------------------------- 
#import psspy 
#import redirect 
import csv 
#psspy.throwPsseExceptions = True 
from Tkinter import * # File Dialog 
import tkFileDialog 
import tkSimpleDialog 
import tkMessageBox 
import Tkinter as tk 



#Pop up window for picking file on PSSE 
#root = tk.Tk() 
#root.withdraw() 
#tkMessageBox.showinfo("Welcome", "Please select case: ") 
#root.fileName= tkFileDialog.askopenfilename(filetypes = (("PSSE CASES", "*.sav"), ("PSSE CASES", "*.raw*"))) 
#STUDY_CASE=root.fileName 



#psspy.psseinit(10000) # Intialize PSSE 
#psspy.case(STUDY_CASE) # Upload Case 


LOAD_GEN_DATAFILE = 'C:\Users\RM\Desktop\Data_2017.csv' # CSV File to Read 

# read the entire CSV into Python. 
# CSV has columns starting with Year,busnum,busname,scaled_power,tla,location,empty,year_link,from_,to,digit,min_value,max_value,last_bus 
#------------------------------------------------------------------------------- 
# read the entire CSV into Python. 
# CSV has columns starting with Year,busnum,busname,scaled_power,tla,location 
data = list(csv.reader(open(LOAD_GEN_DATAFILE))) 
mydict = {} 
for row in data: 
    Year,busnum,busname,scaled_power,tla,data_location,empty,year_link,from_,to,digit,name2,tla_2,min_value,max_value,last_bus = row[0:16] 


    #If this is a year not seen before, add it to the dictionary 
    if Year not in mydict: 
     mydict[Year] = {} 

    busses_in_year = mydict[Year] 
    if data_location not in busses_in_year: 
     busses_in_year[data_location] = [] 


    #Add the bus to the list of busses that stop at this location 
    busses_in_year[data_location].append((busnum,busname,scaled_power)) 
#------------------------------------------------------------------------------- 



#------------------------------------------------------------------------------------------------------------------------------------- 
#User Input Statement 

year = raw_input("Please Select Year of Study: ") 

print("\n") 

location=raw_input(" \n The list above show the TLA Pockets as well as the ID numbers assigned to them()\n\n Please enter the ID #: ") 
#psspy.prompt_output(islct = 6) 
print("\n") 
Year=year 
data_location=location 
#--------------------------------------------------------------------------------------------------------------------------------------- 

#-------------------------------------------------LOAD FORECASTS-------------------------------------------------------------------- 
if Year in mydict and data_location in mydict[Year]: 
    busses_in_year = mydict[Year] 
    #print("Here are all the busses at that location for that year and the new LOAD TOTAL: ") 
    #print("\n") 

    #Busnum, busname,scaled_power read from excel sheet matching year and location 

    for busnum,busname,scaled_power in busses_in_year[data_location]: 
     scaled_power= float(scaled_power) 
     busnum = int(busnum) 
     output='Bus #: {}\t Area Station: {}\t New Load Total: {} MW\t' 
     print(output.format(busnum,busname,scaled_power)) 
     #psspy.bsys(1,0,[0.0,0.0],0,[],1,[busnum],0,[],0,[]) 
     #psspy.scal_2(1,0,1,[0,0,0,0,0],[0.0,0.0,0.0,0.0,0.0,0.0,0.0]) 
     #psspy.scal_2(0,1,2,[0,1,0,1,0],[scaled_power,0.0,0,-.0,0.0,-.0,0]) 


else: 
    exit 
#-------------------------------------------------LOAD FORECASTS-------------------------------------------------------------------- 

#------------------------------------------------VOLTAGE ENVLOPES--------------------------------------------------------------------------------------------------------------------------------- 

for row in data: 
    year_link, from_,to,digit,name2,tla_2,min_value,max_value,last_bus = row[7:16] 
    output = 'From Bus #: {}\tTo Bus #: {}\t Area Station: {}\t VMIN: {} pu\tVMAX: {} pu\t' 
    if year_link == year and tla_2==location: 
     from_=int(from_) 
     to=int(to) 
     min_value=float(min_value) 
     max_value=float(max_value) 
     digit=int(digit) 

     print(output.format(from_, to,name2, min_value, max_value)) 
     #_c=psspy.getdefaultchar() 
     #_i=psspy.getdefaultint() 
     #_f=psspy.getdefaultreal() 
     #psspy.two_winding_chng_4(from_,to,'%d'% digit,[_i,_i,_i,_i,_i,_i,_i,_i,_i,_i,_i,_i,_i,_i,_i],[_f,_f,_f,_f,_f,_f,_f,_f,_f,_f,_f,_f,_f,_f,_f,_f,_f,_f,_f, max_value, min_value,_f,_f,_f],[]) 
    else: 
     exit 
for row in data: 
    year_link, from_,to,digit,name2,tla_2,min_value,max_value,last_bus = row[7:16] 
    if year_link==year and tla_2==location and isinstance(last_bus, int): 
     output = 'From Bus #: {}\tTo Bus #: {}\tLast Bus #: {}\t Area Station: {}\t VMIN: {} pu\tVMAX: {} pu\t' 
     print(output.format(from_, to,name2, min_value, max_value,last_bus)) 
     min_value=float(min_value) 
     max_value=float(max_value) 
     #psspy.three_wnd_winding_data_3(from_,to,last_bus,r"""1""",1,[_i,_i,_i,_i,_i],[_f,_f,_f,_f,_f,_f,_f,_f, max_value, min_value,_f,_f,_f]) 
    else: 
     exit 

    #------------------------------------------------VOLTAGE ENVLOPES----------------------------------------------------------------------------------------------------------------------------------   

os.remove(LOAD_GEN_DATAFILE)

來源

2017-08-30 Michael Roszkowski

你嘗試在Python REPL相關線路？ – ivo

不確定那是什麼 –

歡迎來到SO。請提供最少的樣本來證明錯誤，並告訴我們您期望的結果。 – yacc

csv.writer能夠寫入任何數據（整數，浮點數，字符串...）到csv。但csv.reader不執行相反的操作。

last_bus是直接來自csv.reader迭代器的數據。所以它有是一個字符串。

因此，您的isinstance方法不能返回True。

有幾種方法來檢查一個字符串是否實際上是一個整數。我不會在這裏解釋它們，這將是多餘了很多已回答的問題，但檢查這個問答& A（其連接到其他的Q &爲）來實現你的一個選擇：How can I check if a string has a numeric value in it in Python?

一旦你已經確定該字符串保存一個整數，只要做int(last_bus)轉換爲整數。

來源

2017-08-30 19:21:10

但它不是一個字符串。它是一個整數。我爲什麼要寫數據？我試圖讀取數據 –

它_is_是一個字符串。它只是一個可以轉換爲整數的值。 –

那麼我該怎麼做呢，聲明爲變量，我該怎麼做？ –

好吧，所以我做了你所說的。它的輸出正確，但不輸出到psspy功能。

for row in data: 
    year_link, from_,to,digit,name2,tla_2,min_value,max_value,last_bus = row[7:16] 
    if isinstance(last_bus, str) and year_link==year and tla_2==location and last_bus.isdigit() is True: 
     min_value=float(min_value) 
     max_value=float(max_value) 
     last_bus=int(last_bus) 
     output = 'From Bus #: {}\tTo Bus #: {}\tLast Bus #: {}\t Area Station: {}\t VMIN: {} pu\tVMAX: {} pu\t' 
     print(output.format(from_, to,last_bus,name2, min_value, max_value)) 
     print("\n") 
     psspy.three_wnd_winding_data_3(from_,to,last_bus=int(last_bus),r"""1""",1,[_i,_i,_i,_i,_i],[_f,_f,_f,_f,_f,_f,_f,_f, max_value, min_value,_f,_f,_f]) 
    else: 
     exit

來源

2017-08-31 18:09:35

@ Jean-FrançoisFabre它仍然說整數錯誤 –

isinstance不輸出任何內容

回答

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