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How to know/change current directory in Python shell?
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You can use the os module.
>>> import os
>>> os.getcwd()
'/home/user'
>>> os.chdir("/tmp/")
>>> os.getcwd()
'/tmp'
But if it's about finding other modules: You can set an environment variable called PYT...
Detecting Windows or Linux? [duplicate]
...he commons lang has a class SystemUtils.java
you can use :
SystemUtils.IS_OS_LINUX
SystemUtils.IS_OS_WINDOWS
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What is the iPad user agent?
From what I gather, the iPad is using iPhone OS, but with a different screen resolution from the iPhone and iPod touch. So many sites may have to change their user agent detection to adapt to the iPad.
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Calculating a directory's size using Python?
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This walks all sub-directories; summing file sizes:
import os
def get_size(start_path = '.'):
total_size = 0
for dirpath, dirnames, filenames in os.walk(start_path):
for f in filenames:
fp = os.path.join(dirpath, f)
# skip if it is symbolic li...
Getting a list of all subdirectories in the current directory
...ories, or every directory right down the tree?
Either way, you could use os.walk to do this:
os.walk(directory)
will yield a tuple for each subdirectory. Ths first entry in the 3-tuple is a directory name, so
[x[0] for x in os.walk(directory)]
should give you all of the subdirectories, recur...
python NameError: global name '__file__' is not defined
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This error comes when you append this line os.path.join(os.path.dirname(__file__)) in python interactive shell.
Python Shell doesn't detect current file path in __file__ and it's related to your filepath in which you added this line
So you should write this line os...
List files ONLY in the current directory
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Just use os.listdir and os.path.isfile instead of os.walk.
Example:
import os
files = [f for f in os.listdir('.') if os.path.isfile(f)]
for f in files:
# do something
But be careful while applying this to other directory, li...
马化腾给创业者的3点建议：行业跨界领域最有机会诞生创新 - 资讯 - 清泛网 ...
...港向青年创业者建议，要关注两个产业跨界的部分，因为一个产业已经做得很久，已经是一片红海，我们现...腾讯董事会主席兼CEO马化腾7月19日在香港向青年创业者建议，要关注两个产业跨界的部分，“因为一个产业已经做得很...
Redis 的性能幻想与残酷现实 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...官方文档中也提到，在局域网环境下只要传输的包不超过一个 MTU （以太网下大约 1500 bytes），那么对于 10、100、1000 bytes 不同包大小的处理吞吐能力实际结果差不多。关于吞吐量与数据大小的关系可见下面官方网站提供的示意图...
做了个"外卖菜单选择器"App，才发现ListView和Spinner的区别这么...
... 操作步骤越少越好，中老年顾客也得会用
这本质就是一个列表展示+选择的需求。App Inventor 2里能做这件事的组件，主要有两个：ListView（列表显示框）和Spinner（下拉框）。还有个ListPicker（列表选择器）也算近亲，但交互方式...