| import os | |
| import readline | |
| import rlcompleter | |
| import atexit | |
| history_file = os.path.join(os.environ['HOME'], '.python_history') | |
| try: | |
| readline.read_history_file(history_file) | |
| except IOError: |
| import sys, locale | |
| expressions = """ | |
| locale.getpreferredencoding() | |
| type(my_file) | |
| my_file.encoding | |
| sys.stdout.isatty() | |
| sys.stdout.encoding | |
| sys.stdin.isatty() | |
| sys.stdin.encoding | |
| sys.stderr.isatty() |
| """ | |
| Descriptors | |
| They're the magic behind a whole bunch of core Python features. | |
| When you use dotted access to look up a member (eg, x.y), Python first looks for the member in the instance dictionary. If it's not found, it looks for it in the class dictionary. If it finds it in the class dictionary, and the object implements the descriptor protocol, instead of just returning it, Python executes it. A descriptor is any class that implements the __get__, __set__, or __delete__ methods. | |
| """ | |
| # Here's how you'd implement your own (read-only) version of property using descriptors: | |
| class Property(object): | |
| def __init__(self, fget): | |
| self.fget = fget |
Due to some reason my top bar in gnome-panel got messed up and it not appearing as intended.
To fix this I tried to restore top bar in gnome-panel by using following command.
$ dconf reset -f /org/gnome/gnome-panel/ $ killall gnome-panel
After running above commands it appeared as intended.
| # Original source: Raymond's Hettinger tweet | |
| """ #python lets you run for-loops over partially consumed iterators. | |
| This is useful for extracting and skipping over header rows: | |
| """ | |
| it = iter(f) | |
| header = next(it) | |
| for line in it: | |
| ... | |
| # Original source: @julienbaley tweet |
| def benchmark(func): | |
| import time | |
| def wrapper(*args, **kwargs): | |
| t = time.clock() | |
| res = func(*args, **kwargs) | |
| print(func.__name__, time.clock() - t) | |
| return res | |
| return wrapper | |
| def print_args(func): |
| class Class1(object): | |
| def __init__(self): | |
| print('Class 1 init') | |
| class Class2(Class1): | |
| def __init__(self): | |
| Class1.__init__(self) | |
| super().__init__() # python3 only | |
| super(Class2, self).__init() |
