regular quotes instead of `.

This commit is contained in:
Haydar Kulekci 2013-08-23 09:54:21 +03:00
parent 8c1a1d8a7b
commit de027ddf9e

View File

@ -93,8 +93,8 @@ not False #=> True
# None is an object
None #=> None
# Don't use the equality `==` symbol to compare objects to None
# Use `is` instead
# Don't use the equality "==" symbol to compare objects to None
# Use "is" instead
"etc" is None #=> False
None is None #=> True
@ -158,19 +158,19 @@ li[2:] #=> [4, 3]
# Omit the end
li[:3] #=> [1, 2, 4]
# Remove arbitrary elements from a list with `del`
# Remove arbitrary elements from a list with "del"
del li[2] # li is now [1, 2, 3]
# You can add lists
li + other_li #=> [1, 2, 3, 4, 5, 6] - Note: li and other_li is left alone
# Concatenate lists with `extend()`
# Concatenate lists with "extend()"
li.extend(other_li) # Now li is [1, 2, 3, 4, 5, 6]
# Check for existence in a list with `in`
# Check for existence in a list with "in"
1 in li #=> True
# Examine the length with `len()`
# Examine the length with "len()"
len(li) #=> 6
@ -201,30 +201,30 @@ filled_dict = {"one": 1, "two": 2, "three": 3}
# Look up values with []
filled_dict["one"] #=> 1
# Get all keys as a list with `keys()`
# Get all keys as a list with "keys()"
filled_dict.keys() #=> ["three", "two", "one"]
# Note - Dictionary key ordering is not guaranteed.
# Your results might not match this exactly.
# Get all values as a list with `values()`
# Get all values as a list with "values()"
filled_dict.values() #=> [3, 2, 1]
# Note - Same as above regarding key ordering.
# Check for existence of keys in a dictionary with `in`
# Check for existence of keys in a dictionary with "in"
"one" in filled_dict #=> True
1 in filled_dict #=> False
# Looking up a non-existing key is a KeyError
filled_dict["four"] # KeyError
# Use `get()` method to avoid the KeyError
# Use "get()" method to avoid the KeyError
filled_dict.get("one") #=> 1
filled_dict.get("four") #=> None
# The get method supports a default argument when the value is missing
filled_dict.get("one", 4) #=> 1
filled_dict.get("four", 4) #=> 4
# `setdefault()` method is a safe way to add new key-value pair into dictionary
# "setdefault()" method is a safe way to add new key-value pair into dictionary
filled_dict.setdefault("five", 5) #filled_dict["five"] is set to 5
filled_dict.setdefault("five", 6) #filled_dict["five"] is still 5
@ -284,7 +284,7 @@ for animal in ["dog", "cat", "mouse"]:
print "%s is a mammal" % animal
"""
`range(number)` returns a list of numbers
"range(number)" returns a list of numbers
from zero to the given number
prints:
0
@ -312,7 +312,7 @@ while x < 4:
# Works on Python 2.6 and up:
try:
# Use `raise` to raise an error
# Use "raise" to raise an error
raise IndexError("This is an index error")
except IndexError as e:
pass # Pass is just a no-op. Usually you would do recovery here.
@ -322,7 +322,7 @@ except IndexError as e:
## 4. Functions
####################################################
# Use `def` to create new functions
# Use "def" to create new functions
def add(x, y):
print "x is %s and y is %s" % (x, y)
return x + y # Return values with a return statement
@ -402,7 +402,7 @@ class Human(object):
# Assign the argument to the instance's name attribute
self.name = name
# An instance method. All methods take `self` as the first argument
# An instance method. All methods take "self" as the first argument
def say(self, msg):
return "%s: %s" % (self.name, msg)