Python 无法在函数之间传递变量中的数据

我对Python相当陌生。我熟悉跨函数传递数据的概念

理论上,

def c():
   r = raw_input("Ask Something? ")
   ..
   return r

def p(x):
    ...
    do something

r = c()
p(r)

下面的代码通过终端（python filename.py file.txt）运行良好，但我想添加一个工作流，其中一个变量存储文件的路径并将其传递给函数（processFile）。我只是无法将数据/值传递给函数

这是我试图编辑的代码：

def registerException(exc):
    exceptions[exc] += 1

def processFile(x):
  with open(x, "r") as fh:
    currentMatch = None
    lastLine = None
    addNextLine = False
    for line in fh.readlines():
      if addNextLine and currentMatch != None:
         addNextLine = False
         currentMatch += line
         continue
      match = REGEX.search(line) != None
      if match and currentMatch != None:
         currentMatch += line
      elif match:
         currentMatch = lastLine + line
      else:
         if currentMatch != None:
            registerException(currentMatch)
         currentMatch = None
      lastLine = line
      addNextLine = CONT.search(line) != None
    # If last line in file was a stack trace
    if currentMatch != None:
      registerException(currentMatch)

for f in sys.argv[1:]:
  processFile(f)

for item in sorted(exceptions.items(), key=lambda e: e[1], reverse=True):
  print item[1], ":", item[0]

不管我是将变量声明为全局变量还是局部变量。有人能帮我解决这个问题吗

编辑1：

我已经应用了Daniel建议的更改，现在我得到了：TypeError:“NoneType”对象不可编辑。

代码如下：

def c():
    path = raw_input("Path to file? ")
    r = os.path.abspath(path)

def process_file(filename):
    current = None
    last_line = None
    continue_line = False
    with open(filename, "r") as fh:
        for line in fh:
            if continue_line and current is not None:
               continue_line = False
               current += line
               continue
            if REGEX.search(line):
               if current is None:
                  current = last_line
               current += line
            else:
               if current is not None:
                  yield current
               current = None
            last_line = line
            continue_line = CONT.search(line)
        # If last line in file was a stack trace
        if current is not None:
            yield current

def process_files(filenames):
    exceptions = defaultdict(int)
    for filename in filenames:
        for exc in process_file(filename):
            exceptions[exc] += 1

for item in sorted(exceptions.items(), key=lambda e: e[1], reverse=True):
    print item[1], ":", item[0]

r = c()
process_files(r)

我做了一些更改并删除了sys.argv[1]，因为它在运行脚本时需要在命令行中使用一个参数

---

我认为我得到的新错误是由于操作系统路径。我怎样才能解决这个问题

异常也是一个参数，必须传输到所有函数。或者，您可以将

processFile

编写为生成器，一个内联

寄存器异常

：

def process_file(filename):
    current = None
    last_line = None
    continue_line = False
    with open(filename, "r") as fh:
        for line in fh:
            if continue_line and current is not None:
                continue_line = False
                current += line
                continue
            if REGEX.search(line):
                if current is None:
                    current = last_line
                current += line
            else:
                if current is not None:
                    yield current
                current = None
            last_line = line
            continue_line = CONT.search(line)
        # If last line in file was a stack trace
        if current is not None:
            yield current

def process_files(filenames)
    exceptions = defaultdict(int)
    for filename in filenames:
        for exc in process_file(filename):
            exceptions[exc] += 1

    for item in sorted(exceptions.items(), key=lambda e: e[1], reverse=True):
        print item[1], ":", item[0]

process_files(sys.argv[1:])

---

异常

也是一个参数，必须传输到所有函数。或者，您可以将

processFile

编写为生成器，一个内联

寄存器异常

：

def process_file(filename):
    current = None
    last_line = None
    continue_line = False
    with open(filename, "r") as fh:
        for line in fh:
            if continue_line and current is not None:
                continue_line = False
                current += line
                continue
            if REGEX.search(line):
                if current is None:
                    current = last_line
                current += line
            else:
                if current is not None:
                    yield current
                current = None
            last_line = line
            continue_line = CONT.search(line)
        # If last line in file was a stack trace
        if current is not None:
            yield current

def process_files(filenames)
    exceptions = defaultdict(int)
    for filename in filenames:
        for exc in process_file(filename):
            exceptions[exc] += 1

    for item in sorted(exceptions.items(), key=lambda e: e[1], reverse=True):
        print item[1], ":", item[0]

process_files(sys.argv[1:])

---

你在说什么变量？嗨，马克，如果我在processfile函数之前添加一个变量x=pathtofile，由于某种原因，该值没有被传递。我试着将其创建为全球和本地。我还尝试创建一个函数来捕获这个变量并将其传递给processfile函数，但结果仍然相同。代码将通过终端（python file.py log.txt）正常运行，但我们希望在代码中硬编码pathtofile。您在说什么变量？Hi Mark，如果我在processfile函数之前添加一个变量x=pathtofile，由于某种原因，值不会传递。我试着将其创建为全球和本地。我还尝试创建一个函数来捕获这个变量并将其传递给processfile函数，但结果仍然相同。代码将通过终端（python file.py log.txt）正常运行，但我们希望在代码中硬编码pathtofile。感谢您的输入。但最初的问题仍然存在。我知道它可以通过终端（python file.py log.txt）正常运行，但是我如何在代码中硬编码路径呢？我尝试先声明一个全局变量，然后声明一个局部变量，但process_file函数没有看到这个变量。您可以使用任何文件名列表调用

process_files

，即使是硬编码的文件名。谢谢Daniel！！多亏了你的建议，我终于成功了！！！我丢失了进程文件（[r]）！！！谢谢你的意见，丹尼尔。但最初的问题仍然存在。我知道它可以通过终端（python file.py log.txt）正常运行，但是我如何在代码中硬编码路径呢？我尝试先声明一个全局变量，然后声明一个局部变量，但process_file函数没有看到这个变量。您可以使用任何文件名列表调用

process_files

，即使是硬编码的文件名。谢谢Daniel！！多亏了你的建议，我终于成功了！！！我丢失了进程文件（[r]）！！！