Python string字符串连接 Python实现string字符串连接的方法总结【8种方式】

>>> str1="one"
>>> str2="two"
>>> str1+str2
'onetwo'
>>>

>>> str1="one"
>>> str2="two"
>>> str1 ,str2
('one', 'two')
>>> type((str1 ,str2))
<type 'tuple'>
>>>

>>> str1="one"
>>> str2="two"
>>> "%s%s"%(str1,str2)
'onetwo'

>>> "{test}_666@{data:.2f}".format(test="Land", data=10.1)
'Land_666@10.10'

>>> print "%(test)s666%(last)d" % {"test": "Land", "last": 101}
Land666101

>>> "one" "two"
'onetwo'

>>> str1="one"
>>> str2="two"
>>> str1 str2
 File "<stdin>", line 1
  str1 str2
      ^
SyntaxError: invalid syntax

>>> test = "str1 " \
... "str2 " \
... "str3"
>>> test
'str1 str2 str3'
>>>

>>> str1="one"
>>> 1*str1*4
'oneoneoneone'
>>>

>>> str1="one"
>>> list1=["a","b","c"]
>>> tuple1=("H","I","J")
>>> str1.join(list1)
'aonebonec'
>>> str1.join(tuple1)
'HoneIoneJ'

>>> list2=["a",2,"c",4.3]
>>> str1.join(list2)
Traceback (most recent call last):
 File "<stdin>", line 1, in <module>
TypeError: sequence item 1: expected string, int found
>>>

>>> list1
['a', 'b', 'c']
>>> "".join(list1)
'abc'
>>> type("".join(list1))
<type 'str'>
>>>

>>> "".join(["Land" for i in xrange(3)])
'LandLandLand'
>>> "0".join(["Land" for i in xrange(2)])
'Land0Land'
>>>