python - テキストファイルのPython 2.7無効な構文に書き込めませんか?

Question

私のコードは完璧に動作しますが、値をテキスト ファイルに書き込みたいと考えています。実行しようとすると、「無効な構文」が表示されます。Pythonシェルを使用すると動作します。そのため、スクリプトで機能しない理由がわかりません。

ばかげたことだと思いますが、なぜデータをテキスト ファイルに出力しないのでしょうか??

#!/usr/bin/env python

#standard module, needed as we deal with command line args
import sys

from fractions import Fraction
import pyexiv2


#checking whether we got enough args, if not, tell how to use, and exits
#if len(sys.argv) != 2 :
#    print "incorrect argument, usage: " + sys.argv[0] + ' <filename>'
#    sys.exit(1)

#so the argument seems to be ok, we use it as an imagefile 
imagefilename = sys.argv[1]



#trying to catch the exceptions in case of problem with the file reading
try:
    metadata = pyexiv2.metadata.ImageMetadata(imagefilename)
    metadata.read();

#trying to catch the exceptions in case of problem with the GPS data reading
    try:
        latitude = metadata.__getitem__("Exif.GPSInfo.GPSLatitude")
        latitudeRef = metadata.__getitem__("Exif.GPSInfo.GPSLatitudeRef")
        longitude = metadata.__getitem__("Exif.GPSInfo.GPSLongitude")
        longitudeRef = metadata.__getitem__("Exif.GPSInfo.GPSLongitudeRef")

        # get the value of the tag, and make it float number
        alt = float(metadata.__getitem__("Exif.GPSInfo.GPSAltitude").value)


        # get human readable values
        latitude = str(latitude).split("=")[1][1:-1].split(" ");
        latitude = map(lambda f: str(float(Fraction(f))), latitude)
        latitude = latitude[0] + u"\u00b0" + latitude[1] + "'" + latitude[2] + '"' + " " + str(latitudeRef).split("=")[1][1:-1]

        longitude = str(longitude).split("=")[1][1:-1].split(" ");
        longitude = map(lambda f: str(float(Fraction(f))), longitude)
        longitude = longitude[0] + u"\u00b0" + longitude[1] + "'" + longitude[2] + '"' + " " + str(longitudeRef).split("=")[1][1:-1]

        ## Printing out, might need to be modified if other format needed
        ## i just simple put tabs here to make nice columns
    print " \n A text file has been created with the following information \n"
    print "GPS EXIF data for " + imagefilename    
        print "Latitude:\t" + latitude 
        print "Longitude:\t" + longitude
        print "Altitude:\t" + str(alt) + " m"
    except Exception, e:  # complain if the GPS reading went wrong, and print the exception
        print "Missing GPS info for " + imagefilename
        print e

# Create a new file or **overwrite an existing file**
text_file = open('textfile.txt', 'w')
text_file.write("Latitude" + latitude)
# Close the output file
text_file.close()


except Exception, e:   # complain if the GPS reading went wrong, and print the exception
    print "Error processing image " + imagefilename
    print e;

私が見るエラーは言う:

text_file = open('textfile.txt','w')
        ^
SyntaxError: invalid syntax