Bad operand type for unary str

Question

I cannot figure out a problem I am having with code written in Python 2 7  I am converting the references to ints  but I keep getting a type exception bad operand type for unary     str   Can anyone assist   import urllib2 import time import datetime  stocksToPull    EBAY    AAPL    def pullData stock       try          print  Currently pulling   stock         print str datetime datetime fromtimestamp time time    strftime   Y- m- d  H  M  S            urlToVisit    http   chartapi finance yahoo com instrument 1 0                   stock     chartdata type quote range 3y csv          saveFileLine   stock     txt           try              readExistingData   open saveFileLine   r   read               splitExisting   readExistingData split   n               mostRecentLine   splitExisting -2              lastUnix   mostRecentLine split      0          except Exception  e              print str e              time sleep 1              lastUnix   0          saveFile   open saveFileLine   a           sourceCode   urllib2 urlopen urlToVisit  read           splitSource   sourceCode split   n            for eachLine in splitSource              if  values  not in eachLine                  splitLine   eachLine split                      if len splitLine     6                      if int splitLine 0    gt  int lastUnix                           lineToWrite   eachLine     n                          saveFile write lineToWrite          saveFile close            print  Pulled     stock         print  Sleeping              print str datetime datetime fromtimestamp time time    strftime   Y- m- d  H  M  S            time sleep 120       except Exception  e          print  main loop   str e    for eachStock in stocksToPull      pullData eachStock    I am hitting the operand exception bad operand type for unary     str  when it gets to if int splitLine 0    gt  int lastUnix   even though both values being compared print out as ints when tested  can anyone give me some feedback  thank you   here is the exception response   Currently pulling EBAY 2013-12-21 11 32 40 Pulled main loop bad operand type for unary     str  Currently pulling AAPL 2013-12-21 11 32 41 Pulled main loop bad operand type for unary     str

User · Answer

The code works for me   after adding missing except clause   import statements   Did you put   in the original code   urlToVisit    http   chartapi finance yahoo com instrument 1 0                     stock     chartdata type quote range 5d csv    If you omit it  it could be a cause of the exception    gt  gt  gt  stock    GOOG   gt  gt  gt  urlToVisit    http   chartapi finance yahoo com instrument 1 0    gt  gt  gt    stock     chartdata type quote range 5d csv  Traceback  most recent call last     File   lt stdin gt    line 1  in  lt module gt  TypeError  bad operand type for unary     str    BTW  string e  should be str e

User · Answer

You say that if int splitLine 0    gt  int lastUnix   is causing the trouble  but you don t actually show anything which suggests that   I think this line is the problem instead   print  Pulled     stock   Do you see why this line could cause that error message   You want either   gt  gt  gt  stock    AAAA   gt  gt  gt  print  Pulled   stock Pulled AAAA   or   gt  gt  gt  print  Pulled     stock Pulled AAAA   not   gt  gt  gt  print  Pulled     stock PulledTraceback  most recent call last     File   lt ipython-input-5-7c26bb268609 gt    line 1  in  lt module gt      print  Pulled     stock TypeError  bad operand type for unary     str    You re asking Python to apply the   symbol to a string like  23 makes a positive 23  and she s objecting

[python] Bad operand type for unary +: 'str'

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