當我運行這段代碼在一個新的Python 3.4.1 shell窗口: >>> def golf(c):
a,d=[],{"U":"a.append(int(x[5]))","O":'a.pop() if a else 0',"E":'a[-1]'}
return sum(eval(d[x[1]])or 0 for x in c)or 0
>>> golf(("PUSH 3", "POP",
我試圖讓一個程序找到兩個數字之間的所有整數的總和,包括兩個數字之和。我將粘貼到目前爲止我所擁有的內容,但是出現錯誤(i是重複的本地變量?)。由於 public int sum(int num1, int num2){
if (num1 == num2){
return num1;
}
if (num1 > num2){
for (int i
def func_print_x():
## x += 1 ## if uncomment this line, it will raise UnboundLocalError: local variable 'x' referenced before assignment
print x
if __name__ = '__main__':
x = 4
f
例如,在Rails的Gemfile: group :development, :test do
gem 'rspec-rails', '~> 2.0'
end
正在發生的事情與do ... end聲明?並使用RSpec: describe "Foo" do
context "bar" do
expect...
end
end
是do ... en