2019年3月26日 星期二

基礎知識

1. 基礎知識


1-1 print:
ex: 想要print "hello world"
-------------------
print("hello world")

Run:
hello world
-------------------
This is one single "OPERAND"

1-2 print, new line character:
"\n" = change line character
-------------------
print("hello\nworld")

Run:
hello
world
-------------------
print("hello \nworld")

Run:
hello
 world
-------------------

1-3 print, escape sequence:
\n = change line
\t = horizontal tab
\\ = slash"\"
\' = single quotation" ' "
\" = double quotation " " "
-------------------
a = "Tom\'s brother writes\"1/2 is 0.5\"on his book and Tom\'s book."
print(a)

Run:
Tom's brother writes"1/2 is 0.5"on his book and Tom's book.
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1-4 simple arithmetic:
+  -  *  / = 加減乘除
**          = 次方
//            = 商
%           = 取餘
-------------------
candies = 87levelup = candies//7left = candies%7
print ("Power it up %s times and have %s candies left."%(levelup,left))

Run:
Power it up 12 times and have 3 candies left.
-------------------
**補充: 字串格式化
在字串中打"%s",並在最後打%(你要取代的東西)


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基礎知識

1. 基礎知識 1-1 print: ex: 想要print "hello world" ------------------- print ( "hello world" ) Run: hello world ----...