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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
parent 2f3597efc4
commit 5f89f277b9
1 changed files with 16 additions and 15 deletions
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@ -8,20 +8,22 @@ contributors:
filename: learnpython.py filename: learnpython.py
--- ---
Python was created by Guido Van Rossum in the early 90s. It is now one of the most popular Python was created by Guido Van Rossum in the early 90s. It is now one of the
languages in existence. I fell in love with Python for its syntactic clarity. It's basically most popular languages in existence. I fell in love with Python for its
executable pseudocode. 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 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, to Python 2.x. Python 2.7 is reaching end of life and will stop being
it is though recommended to start learning Python with Python 3. maintained in 2020, it is though recommended to start learning Python with
For Python 3.x, take a look at the [Python 3 tutorial](http://learnxinyminutes.com/docs/python3/). 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, It is also possible to write Python code which is compatible with Python 2.7
using Python [`__future__` imports](https://docs.python.org/2/library/__future__.html). `__future__` imports 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. allow you to write Python 3 code that will run on Python 2, so check out the
Python 3 tutorial.
```python ```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 as comments
""" """
#################################################### ####################################################
## 1. Primitive Datatypes and Operators ## 1. Primitive Datatypes and Operators
#################################################### ####################################################
@ -188,6 +191,7 @@ some_other_var # Raises a name error
# Equivalent of C's '?:' ternary operator # Equivalent of C's '?:' ternary operator
"yahoo!" if 3 > 2 else 2 # => "yahoo!" "yahoo!" if 3 > 2 else 2 # => "yahoo!"
# Lists store sequences # Lists store sequences
li = [] li = []
# You can start with a prefilled list # You can start with a prefilled list
@ -441,6 +445,7 @@ with open("myfile.txt") as f:
for line in f: for line in f:
print line print line
#################################################### ####################################################
## 4. Functions ## 4. Functions
#################################################### ####################################################
@ -464,7 +469,6 @@ def varargs(*args):
varargs(1, 2, 3) # => (1, 2, 3) varargs(1, 2, 3) # => (1, 2, 3)
# You can define functions that take a variable number of # You can define functions that take a variable number of
# keyword args, as well, which will be interpreted as a dict by using ** # keyword args, as well, which will be interpreted as a dict by using **
def keyword_args(**kwargs): def keyword_args(**kwargs):
@ -698,7 +702,6 @@ for i in double_numbers(xrange_):
# message # message
from functools import wraps from functools import wraps
def beg(target_function): def beg(target_function):
@wraps(target_function) @wraps(target_function)
def wrapper(*args, **kwargs): def wrapper(*args, **kwargs):
@ -709,13 +712,11 @@ def beg(target_function):
return wrapper return wrapper
@beg @beg
def say(say_please=False): def say(say_please=False):
msg = "Can you buy me a beer?" msg = "Can you buy me a beer?"
return msg, say_please return msg, say_please
print say() # Can you buy me a beer? print say() # Can you buy me a beer?
print say(say_please=True) # Can you buy me a beer? Please! I am poor :( print say(say_please=True) # Can you buy me a beer? Please! I am poor :(
``` ```