软件简介

YahooFinance是一个从finance.yahoo.com获得股市信息的Ruby模块。它可以获取股票数据和历史数据。它能作为一个类库使用，也可以通过命令行调用。

安装方法：gem install yahoofinance

使用方法：

**require 'yahoofinance'**

 # Set the type of quote we want to retrieve.  
# Available type are:  
#  - YahooFinanace::StandardQuote  
#  - YahooFinanace::ExtendedQuote  
#  - YahooFinanace::RealTimeQuote  
 **quote_type = YahooFinance::StandardQuote**

 # Set the symbols for which we want to retrieve quotes.  
# You can include more than one symbol by separating   
# them with a ',' (comma).  
 **quote_symbols = "yhoo,goog"**

 # Get the quotes from Yahoo! Finance.  The get_quotes method call  
# returns a Hash containing one quote object of type "quote_type" for  
# each symbol in "quote_symbols".  If a block is given, it will be  
# called with the quote object (as in the example below).  
 **YahooFinance::get_quotes( quote_type, quote_symbols ) do |qt|  
    puts "QUOTING: #{qt.symbol}"  
    puts qt.to_s  
end**

# You can get the same effect using the quote specific method.  
 **quotes = YahooFinance::get_standard_quotes( quote_symbols )  
 quotes.each do |symbol, qt|  
    puts "QUOTING: #{symbol}"  
    puts qt.to_s  
end**