diff options
Diffstat (limited to 'zh-tw/python-tw.html.markdown')
| -rw-r--r-- | zh-tw/python-tw.html.markdown | 34 |
1 files changed, 15 insertions, 19 deletions
diff --git a/zh-tw/python-tw.html.markdown b/zh-tw/python-tw.html.markdown index d113f90c..797fc6ed 100644 --- a/zh-tw/python-tw.html.markdown +++ b/zh-tw/python-tw.html.markdown @@ -663,34 +663,30 @@ dir(math) ## 7. 進階 #################################################### -# Generators help you make lazy code +# 產生器(Generator)可以讓你寫更懶惰的程式碼 def double_numbers(iterable): for i in iterable: yield i + i -# A generator creates values on the fly. -# Instead of generating and returning all values at once it creates one in each -# iteration. This means values bigger than 15 wont be processed in -# double_numbers. -# Note xrange is a generator that does the same thing range does. -# Creating a list 1-900000000 would take lot of time and space to be made. -# xrange creates an xrange generator object instead of creating the entire list -# like range does. -# We use a trailing underscore in variable names when we want to use a name that -# would normally collide with a python keyword +# 產生器可以讓你即時的產生值 +# 不是全部產生完之後再一次回傳，產生器會在每一個遞迴時 +# 產生值。 這也意味著大於15的值不會在double_numbers中產生。 +# 這邊，xrange()做的事情和range()一樣 +# 建立一個 1-900000000 的List會消耗很多時間和記憶體空間 +# xrange() 建立一個產生器物件，而不是如range()建立整個List +# 我們用底線來避免可能和python的關鍵字重複的名稱 xrange_ = xrange(1, 900000000) -# will double all numbers until a result >=30 found +# 下面的程式碼會把所有的值乘以兩倍，直到出現大於30的值 for i in double_numbers(xrange_): print i if i >= 30: break -# Decorators -# in this example beg wraps say -# Beg will call say. If say_please is True then it will change the returned -# message +# 裝飾子 +# 在這個範例中，beg會綁在say上 +# Beg會呼叫say。 如果say_please為True的話，它會更改回傳的訊息 from functools import wraps @@ -715,9 +711,9 @@ print say() # Can you buy me a beer? print say(say_please=True) # Can you buy me a beer? Please! I am poor :( ``` -## Ready For More? +## 準備好學更多了嗎? -### Free Online +### 線上免費資源 * [Automate the Boring Stuff with Python](https://automatetheboringstuff.com) * [Learn Python The Hard Way](http://learnpythonthehardway.org/book/) @@ -728,7 +724,7 @@ print say(say_please=True) # Can you buy me a beer? Please! I am poor :( * [A Crash Course in Python for Scientists](http://nbviewer.ipython.org/5920182) * [First Steps With Python](https://realpython.com/learn/python-first-steps/) -### Dead Tree +### 或買本書? * [Programming Python](http://www.amazon.com/gp/product/0596158106/ref=as_li_qf_sp_asin_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=0596158106&linkCode=as2&tag=homebits04-20) * [Dive Into Python](http://www.amazon.com/gp/product/1441413022/ref=as_li_tf_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=1441413022&linkCode=as2&tag=homebits04-20) |