Python 如果定义了函数，将变量输出写入文件的方法是什么

Question

如果定义了函数，如何将变量数据信息写入文件。虽然我正在尝试下面的方法，但它只写了几行：

请让我知道我在这里犯了什么错误...

fileData = 'ldap_conn_logs'
def ChkCon():
    Flag    = False
    FlagTcp = False
    NewStr  = ''
    OutStr  = ''
    HOST    = ''
    MARKER  = '----------------'
    NEWLINE = '\n'
    with open('ldap_bind_netstat', 'r') as log:
        for line in log:
            if '| SUCCESS |' in line:
                if Flag:
                    return HOST
                    return MARKER
                    return NewStr
            if '| SUCCESS |' in line:
                Flag = False
                FlagTcp = True
                HOST = line.split()[0]
                NewStr = ''
            elif 'FAILED' in line:
                FlagTcp = False
            elif 'UNREACHABLE' in line:
                FlagTcp = False
            if FlagTcp and line.startswith('tcp'):
                NewStr += line
                if 'tsdj-lb-oidc01' not in line:
                    Flag = True
                OutStr = HOST + NEWLINE + MARKER + NEWLINE + NewStr
                fileWrite = open(fileData, mode='a', encoding='utf-8')
                fileWrite.write(OutStr)
                fileWrite.close()
ChkCon()

Answer 1

正如 Vinny 所提到的，这个例子既不完整也无法验证。我最好的猜测是您想用 mode='a' 替换 mode='w+'。您似乎并没有真正阅读 fileData，所以不要理会 +。每次您运行通过循环时，写入模式都会覆盖您的文件。

Answer 2

@reculseSoul，使用str.format方法并关闭for循环外的fileWrite.close()。请尝试下面它应该工作。

def ChkCon():
    Flag    = False
    FlagTcp = False
    NewStr  = ''
    OutStr  = ''
    HOST    = ''
    MARKER  = '----------------'
    NEWLINE = '\n'
    fileData = 'ldap_conn_logs'
    with open('ldap_bind_netstat', 'r') as log:
        for line in log:
            if '| SUCCESS |' in line:
                if Flag:
                    return HOST
                    return MARKER
                    return NewStr
            if '| SUCCESS |' in line:
                Flag = False
                FlagTcp = True
                HOST = line.split()[0]
                NewStr = ''
            elif 'FAILED' in line:
                FlagTcp = False
            elif 'UNREACHABLE' in line:
                FlagTcp = False
            if FlagTcp and line.startswith('tcp'):
                NewStr += line
                if 'tsdj-lb-oidc01' not in line:
                    Flag = True
                OutStr = HOST + NEWLINE + MARKER + NEWLINE + NewStr
                fileWrite = open(fileData, 'w')
                fileWrite.write(OutStr)
                file.write('{0}'.format(OutStr))
        fileWrite.close()
        log.close()
ChkCon()

Python 如果定义了函数，将变量输出写入文件的方法是什么

Python What is way of Writing a Variable output into a file if a function defined

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python-3.5