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Python strftime - date without leading 0?
...he leading zero.
For example %Y/%-m/%-d.
This only works on Unix (Linux, OS X), not Windows (including Cygwin). On Windows, you would use #, e.g. %Y/%#m/%#d.
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How to modify a text file?
...ay to insert into the middle of a file without re-writing it. As previous posters have indicated, you can append to a file or overwrite part of it using seek but if you want to add stuff at the beginning or the middle, you'll have to rewrite it.
This is an operating system thing, not a Python thing...
程序员之网络安全系列（三）：数据加密之对称加密算法 - 更多技术 - 清泛网...
...手段还原（解密）。 加密包括两个元素：算法和密钥。一个加密算法是将普通的文本（或者可以理解的信息）与一窜数字（密钥）的结合，产生不可理解的密文的步骤，密钥是用来对数据进行编码和解码的一种算法。
举个例子...
Get login username in java
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This code goes against Java's philosophy of write once, run anywhere (introduction of OS specific code), and secondly, it creates a dependency on Sun's implementation of Java.
– Jin Kim
May 19 '09 at 16:28
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How to import classes defined in __init__.py
...ject
Helper in lib.foo.someobject
# ./import_submodule.py
import fnmatch, os
from lib.settings import Values
from lib import Helper
print
for root, dirs, files in os.walk('.'):
for f in fnmatch.filter(files, '*.py'):
print "# %s/%s" % (os.path.basename(root), f)
print open(os.p...
Case insensitive comparison of strings in shell script
... answered Nov 13 '09 at 12:02
ghostdog74ghostdog74
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Nokogiri installation fails -libxml2 is missing
...g' error. can you tell me more about the build tool chain installation. b'cos i didnt find much help on it.
– Rohit A.
Jun 8 '11 at 11:41
1
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How to grep and replace
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On OS X 10.10 Terminal, a proper extension string to parameter -i is required. For example, find /path/to/files -type f -exec sed -i "" "s/oldstring/new string/g" {} \; Anyway, providing empty string still creates a backup file ...
When and why will a compiler initialise memory to 0xCD, 0xDD, etc. on malloc/free/new/delete?
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A quick summary of what Microsoft's compilers use for various bits of unowned/uninitialized memory when compiled for debug mode (support may vary by compiler version):
Value Name Description
------ -------- --------------------...
Recursive search and replace in text files on Mac and Linux
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OS X uses a mix of BSD and GNU tools, so best always check the documentation (although I had it that less didn't even conform to the OS X manpage):
https://web.archive.org/web/20170808213955/https://developer.apple.com/lega...