出现NameError: name 'filename' is not defined 错误,通常意味着在代码中使用了变量 filename,但是在使用它之前没有正确地定义它。以下是一些解决此错误的步骤: 确认filename变量是否已在代码中定义: 检查你的代码,确保在使用 filename 变量之前,你已经有类似 filename = 'some_value' 的定义语句。 如果未定...
fp = file(filename, 'wb') 修改为 fp = open(filename, 'wb')
while True:fname = raw_input('input a file name to save filenames:%s' % ls)if os.path.exists(fname):#os.path.exists（path）判断path是否存在 print ('error: %s already exsit', fname)else:print 'saved to', fname break all = []print ('%senter filename:%s' % (ls, ...
一、无法打开文件“xxx.lib” 出现这种错误一般为 ①未添加xxx.lib库文件 ②库添加后，路径不对...
1python程序gridregression.py运行出错: NameError: global name 'out_filename' is not defined 错误如下Traceback (most recent call last) File "D:\huigui\libsvm\Python24\gridregression.py", line 281, in ? result_file = open(out_filename,'w',0)NameError: global name 'out_filename' is not...
Using Xonsh + Exofrills editor (xo) which has urwid dependency Getting the following traceback: $ xo .xonshrc xonsh: To log full traceback to a file set: $XONSH_TRACEBACK_LOGFILE = <filename> Traceback (most recent call last): File "C:\U...
上面的代码会抛出’NameError: name ‘open’ is not defined’错误,因为在read_file方法中直接使用了’open’函数,而没有通过self来引用。 为了解决这个问题,我们应该将’open’函数改为通过self来引用,如下所示: from py2neo import Graph class MyNeo4j: def __init__(self, uri, user, password): self...
(settings_module) filename = settings.__file__.replace('.pyc', '.py') try: execfile(filename) except NameError: exec(open(filename).read()) try: from mattermost_bot_settings import * except ImportError: try: from local_settings import * except ImportError: pass if not BOT_URL.ends...
Error NameError: name 'np' is not defined [closed] 我擦,开始菜单调出来的python,是在"C:\Program Files (x86)\Microsoft Visual Studio\Shared\Python37_64\python.exe"打开vs的安装包,然后把Python环境那个去掉。查看Python命令行所在的路径>>> import os>>> os.getcwd()'C:\\Users\\clu\\AppData\...
File "D:\huigui\libsvm\Python24\gridregression.py", line 281, in ? result_file = open(out_filename,'w',0)NameError: global name 'out_filename' is not defined部分程序代码如下:#global parameters and their default valuesfold = 5c