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:::

1-8 語法

2. 函數

python 筆記
=========

### print 輸出

使用 format

```python

text = 'world'
print('hello {}'.format(text))
# hello world

name = 'Jack'
text = 'world'

print('hello {name}, hello {text}'.format(name=name, text=text))
# hello Jack, hello world
```

[`string`](https://docs.python.org/3/library/string.html)[ — Common string operations](https://docs.python.org/3/library/string.html)

```

>>> '{0}, {1}, {2}'.format('a', 'b', 'c')
'a, b, c'
>>> '{}, {}, {}'.format('a', 'b', 'c')  # 3.1+ only
'a, b, c'
>>> '{2}, {1}, {0}'.format('a', 'b', 'c')
'c, b, a'
>>> '{2}, {1}, {0}'.format(*'abc')      # unpacking argument sequence
'c, b, a'
>>> '{0}{1}{0}'.format('abra', 'cad')   # arguments' indices can be repeated
'abracadabra'

>>> "int: {0:d};  hex: {0:x};  oct: {0:o};  bin: {0:b}".format(42)
'int: 42;  hex: 2a;  oct: 52;  bin: 101010'

>>> '{:+f}; {:+f}'.format(3.14, -3.14)  # show it always
'+3.140000; -3.140000'
```

```

#end 預設換行
print('a' , 'b' , 'c' )   -> a b c

#sep 分隔 end結束為空白無換行
print('a' , 'b' , 'c' , sep="," , end= " ")  -> a,b.c
```

```

# <b>%</b>  做資料的分隔，不是逗號
print("%3d" <b>%</b> 42))
print("%2d %2d " % (42 , 45))
```

```

#使用 .format (文字 < 置左   >置右) {0}第一個參數 ...
print("{0:<20s} {1:6.2f}".format('Spam & Eggs:' , 7.99)  )  -> Spam & Ham:            7.99
```

- [Formatted Output](http://www.python-course.eu/python3_formatted_output.php) 參考資料

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