我正在学习Python中的基本GUI,我遇到了一个示例,用于从Stack Overflow上的文件资源管理器中读取文件名.
from Tkinter import Tk
from tkFileDialog import askopenfilename
Tk().withdraw() # we don't want a full GUI, so keep the root window from appearing
filename = askopenfilename() # show an "Open" dialog box and return the path to the selected file
print(filename)
当我尝试在IDLE中运行它时,这个特殊的脚本工作正常,但是如果我在Windows 7中从命令提示符处尝试,则不会运行.
Python版本:2.7.这是我得到的输出错误.
>>> from Tkinter import Tk
>>> from tkFileDialog import askopenfilename
>>> Tk().withdraw()
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "C:\Python27\Lib\lib-tk\Tkinter.py", line 1685, in __init__
self.tk = _tkinter.create(screenName, …我正在编写一个shell脚本,它从属性文件中读取数据并将其存储到shell脚本中的本地变量中.问题是当我试图从文件中读取多个属性并形成一个字符串时,它已经过了写
#!/bin/bash
. /opt/oracle/scripts/user.properties
echo $username
echo $password
echo $service_name
conn=$username$password$service_name
echo $conn
username = xxxx password = yyyy和service_name = zzzz的值我希望输出为
xxxxyyyyzzzz
但而不是我得到的输出
zzzz
请告诉我我在哪里做错了？