Python学习第一天-变量和字符串（上）

Python 3.12.1 (tags/v3.12.1:2305ca5, Dec  7 2023, 22:03:25) [MSC v.1937 64 bit (AMD64)] on win32
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>>>x=3
>>>print(x)
3
>>>loveyou1314=1314
>>>520baby=520
SyntaxError: invalid decimal literal(变量名不能有数字开头)
>>>幸运数=588
>>>print(幸运数)
588
>>>name="小甲鱼"
>>>print(name)
小甲鱼
>>>name="老乌龟"
>>>print(name)
老乌龟
>>>x=3
>>>y=5
>>>y=x
>>>print(y)
3
>>>x=y=3
>>>x
3
>>>y
3
>>>x=3
>>>y=5
>>>z=x
>>>x=y
>>>y=z
>>>print(x,y)
5 3
x=3
y=5
x,y=y,x
>>>print(x,y)
5 3
>>>print('I love China,')
I love China,
>>>print("I love fishC.")
I love fishC.
>>>print('Let's go.')
      
SyntaxError: unterminated string literal (detected at line 1)（中间的单引号和两侧的单引号混淆）
>>>print("Let's go.")
      
Let's go.
>>>print('"Life is short,let's learn Python."')
      
SyntaxError: unterminated string literal (detected at line 1) （中间的单引号和两侧的单引号混淆，两侧的双引号只起强调作用）

>>>print('\"Life is short,let\'s learn Python.\"')
      
"Life is short,let's learn Python."
>>>print('I love China.\nI love fishC.')
     （ 增加了3个转义字符\’）
I love China.
I love fishC.
（加了一个转义字符换行\n）