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fixed whitespaces & content extending beyond 80 chars

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Divay Prakash 2016-03-18 12:23:18 +05:30
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@ -8,20 +8,22 @@ contributors:
filename: learnpython.py
---
Python was created by Guido Van Rossum in the early 90s. It is now one of the most popular
languages in existence. I fell in love with Python for its syntactic clarity. It's basically
executable pseudocode.
Python was created by Guido Van Rossum in the early 90s. It is now one of the
most popular languages in existence. I fell in love with Python for its
syntactic clarity. It's basically executable pseudocode.
Feedback would be highly appreciated! You can reach me at [@louiedinh](http://twitter.com/louiedinh) or louiedinh [at] [google's email service]
Feedback would be highly appreciated! You can reach me at [@louiedinh](http://twitter.com/louiedinh)
or louiedinh [at] [google's email service]
Note: This article applies to Python 2.7 specifically, but should be applicable
to Python 2.x. Python 2.7 is reaching end of life and will stop being maintained in 2020,
it is though recommended to start learning Python with Python 3.
For Python 3.x, take a look at the [Python 3 tutorial](http://learnxinyminutes.com/docs/python3/).
Note: This article applies to Python 2.7 specifically, but should be applicable
to Python 2.x. Python 2.7 is reaching end of life and will stop being
maintained in 2020, it is though recommended to start learning Python with
Python 3. For Python 3.x, take a look at the [Python 3 tutorial](http://learnxinyminutes.com/docs/python3/).
It is also possible to write Python code which is compatible with Python 2.7 and 3.x at the same time,
using Python [`__future__` imports](https://docs.python.org/2/library/__future__.html). `__future__` imports
allow you to write Python 3 code that will run on Python 2, so check out the Python 3 tutorial.
It is also possible to write Python code which is compatible with Python 2.7
and 3.x at the same time, using Python [`__future__` imports](https://docs.python.org/2/library/__future__.html). `__future__` imports
allow you to write Python 3 code that will run on Python 2, so check out the
Python 3 tutorial.
```python
@ -32,6 +34,7 @@ allow you to write Python 3 code that will run on Python 2, so check out the Pyt
as comments
"""
####################################################
## 1. Primitive Datatypes and Operators
####################################################
@ -188,6 +191,7 @@ some_other_var # Raises a name error
# Equivalent of C's '?:' ternary operator
"yahoo!" if 3 > 2 else 2 # => "yahoo!"
# Lists store sequences
li = []
# You can start with a prefilled list
@ -441,6 +445,7 @@ with open("myfile.txt") as f:
for line in f:
print line
####################################################
## 4. Functions
####################################################
@ -464,7 +469,6 @@ def varargs(*args):
varargs(1, 2, 3) # => (1, 2, 3)
# You can define functions that take a variable number of
# keyword args, as well, which will be interpreted as a dict by using **
def keyword_args(**kwargs):
@ -698,7 +702,6 @@ for i in double_numbers(xrange_):
# message
from functools import wraps
def beg(target_function):
@wraps(target_function)
def wrapper(*args, **kwargs):
@ -709,13 +712,11 @@ def beg(target_function):
return wrapper
@beg
def say(say_please=False):
msg = "Can you buy me a beer?"
return msg, say_please
print say() # Can you buy me a beer?
print say(say_please=True) # Can you buy me a beer? Please! I am poor :(
```