Python - 保持命令窗口打開以查看結果

Question

我有一個包含的文本文件（test.txt）

text1 text2 text text text

以下是我的代碼：

import codecs
BOM = codecs.BOM_UTF8.decode('utf8')
name = (raw_input("Please enter the name of the file: "))

with codecs.open(name, encoding='utf-8') as f:
    words=[]            #define words here
    for line in f:
        line = line.lstrip(BOM)
        words.extend(line.split())        #append words from each line to words  

if len(words) > 2:
    print 'There are more than two words'
    firstrow = words[:2]
    print firstrow                #indentation problem here
elif len(words) <2:                    #use if
    print 'There are under 2 words, no words will be shown'

raw_input("Press return to close this window...")

當我運行.py文件時，我想保持命令窗口打開，這樣我就能看到所有的打印件，但由於某種原因，它會立即關閉，當我在shell中運行它時，它可以工作。 由於某種原因，raw_input不像我通常那樣工作。 這是我在python的第二天，所以我還是一個新手！

先謝謝您的幫助

Answer 1

新手問題，新手回答!!

我沒有在我的.py目錄中的文本文件只在我的shell路徑中，這就是為什么它在那里工作。

Answer 2

您應該至少將文件讀取代碼放在try / except塊中，這樣您就可以看到發生了什么錯誤;

import codecs

BOM = codecs.BOM_UTF8.decode('utf8')
name = raw_input("Please enter the name of the file: ")

try:
  with codecs.open(name, encoding='utf-8') as f:
    words=[]            #define words here
    for line in f:
        line = line.lstrip(BOM)
        words.extend(line.split())
except Exception as details:
  print "Unexpected error:", details
  raw_input("Press return to close this window...")
  exit(1)

if len(words) > 2:
    print 'There are more than two words'
    firstrow = words[:2]
    print firstrow
elif len(words) <2:                    #use if
    print 'There are under 2 words, no words will be shown'

raw_input("Press return to close this window...")

如果我嘗試使用不存在的文件名：

Please enter the name of the file: bla
Unexpected error: [Errno 2] No such file or directory: 'bla'
Press return to close this window...