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| -rw-r--r-- | zh-cn/python3-cn.html.markdown | 20 |
1 files changed, 9 insertions, 11 deletions
diff --git a/zh-cn/python3-cn.html.markdown b/zh-cn/python3-cn.html.markdown index 74e997ec..e297a7ce 100644 --- a/zh-cn/python3-cn.html.markdown +++ b/zh-cn/python3-cn.html.markdown @@ -42,9 +42,9 @@ Note: This article applies to Python 3 specifically. Check out the other tutoria 35 / 5 # => 7.0 5 / 3 # => 1.6666666666666667 -# Result of integer division truncated down both for positive and negative. +# 整数除法的结果都是向下取整 5 // 3 # => 1 -5.0 // 3.0 # => 1.0 # works on floats too +5.0 // 3.0 # => 1.0 # 浮点数也可以 -5 // 3 # => -2 -5.0 // 3.0 # => -2.0 @@ -107,22 +107,20 @@ False or True #=> True # 字符串可以被当作字符列表 "This is a string"[0] # => 'T' -# .format can be used to format strings, like this: +# 用.format来格式化字符串 "{} can be {}".format("strings", "interpolated") -# You can repeat the formatting arguments to save some typing. +# 可以重复参数以节省时间 "{0} be nimble, {0} be quick, {0} jump over the {1}".format("Jack", "candle stick") #=> "Jack be nimble, Jack be quick, Jack jump over the candle stick" -# You can use keywords if you don't want to count. +# 如果不想数参数，可以用关键字 "{name} wants to eat {food}".format(name="Bob", food="lasagna") #=> "Bob wants to eat lasagna" -# If your Python 3 code also needs to run on Python 2.5 and below, you can also -# still use the old style of formatting: +# 如果你的Python3程序也要在Python2.5以下环境运行，也可以用老式的格式化语法 "%s can be %s the %s way" % ("strings", "interpolated", "old") - -# None is an object +# None是一个对象 None # => None # Don't use the equality "==" symbol to compare objects to None @@ -130,8 +128,8 @@ None # => None "etc" is None # => False None is None # => True -# None, 0, and empty strings/lists/dicts all evaluate to False. -# All other values are True +# None，0，空字符串，空列表，空关联数组都算是False +# 所有其他值都是True bool(0) # => False bool("") # => False bool([]) #=> False |