python查找和替换列表项（如果存在子字符串）_Python_String_Python 3.x_List_Substring

python查找和替换列表项（如果存在子字符串）

python string python-3.x list

python查找和替换列表项（如果存在子字符串）,python,string,python-3.x,list,substring,Python,String,Python 3.x,List,Substring,我想替换包含某个子字符串的列表中的项。在这种情况下，包含任何形式的“NSW”（大写字母很重要）的项目应替换为“NSW=0”。原始条目是否为“NSW=500”或“NSW=501”并不重要。我可以找到列表项，但不知怎的，我在列表中找不到位置，所以我可以替换它？这是我想到的，但我替换了所有项目： from __future__ import division, print_function, with_statement my_list =["abc 123","acd 234","NSW = 500

我想替换包含某个子字符串的列表中的项。在这种情况下，包含任何形式的“NSW”（大写字母很重要）的项目应替换为“NSW=0”。原始条目是否为“NSW=500”或“NSW=501”并不重要。我可以找到列表项，但不知怎的，我在列表中找不到位置，所以我可以替换它？这是我想到的，但我替换了所有项目：

from __future__ import division, print_function, with_statement
my_list =["abc 123","acd 234","NSW = 500", "stuff","morestuff"]
for index, i in enumerate(my_list):
    if any("NSW" in s for s in my_list):
        print ("found")
        my_list[index]= "NSW = 0"
print (my_list)

any

不会为您提供索引，并且在每次迭代中都是真的。所以放下它

就我个人而言，我会使用三元组的列表理解来决定保留原始数据或替换为

NSW=0

：

my_list =["abc 123","acd 234","NSW = 500", "stuff","morestuff"]

result = ["NSW = 0" if "NSW" in x else x for x in my_list]

结果:

['abc 123', 'acd 234', 'NSW = 0', 'stuff', 'morestuff']

any

不会为您提供索引，并且在每次迭代中都是真的。所以放下它

就我个人而言，我会使用三元组的列表理解来决定保留原始数据或替换为

NSW=0

：

my_list =["abc 123","acd 234","NSW = 500", "stuff","morestuff"]

result = ["NSW = 0" if "NSW" in x else x for x in my_list]

结果:

['abc 123', 'acd 234', 'NSW = 0', 'stuff', 'morestuff']

简单的

列表理解

：

>>> ["NSW = 0" if "NSW" in ele else ele for ele in l]

#驱动程序值：

IN :    l = ["abc 123", "acd 234", "NSW = 500", "stuff", "morestuff"]
OUT : ['abc 123', 'acd 234', 'NSW = 0', 'stuff', 'morestuff']

简单的

列表理解

：

>>> ["NSW = 0" if "NSW" in ele else ele for ele in l]

#驱动程序值：

IN :    l = ["abc 123", "acd 234", "NSW = 500", "stuff", "morestuff"]
OUT : ['abc 123', 'acd 234', 'NSW = 0', 'stuff', 'morestuff']

另一个解决方案： 代码：

from __future__ import division, print_function, with_statement
my_list =["abc 123","acd 234","NSW = 500", "stuff","morestuff"]
for index in xrange(len(my_list)):
    if "NSW" in my_list[index]:
        my_list[index] = "NSW = 0"

print (my_list)

['abc 123', 'acd 234', 'NSW = 0', 'stuff', 'morestuff']

my_list =["abc 123","acd 234","NSW = 500", "stuff","morestuff"]

print ["NSW = 0" if "NSW" in _ else _ for _ in my_list]

['abc 123', 'acd 234', 'NSW = 0', 'stuff', 'morestuff']

输出：

from __future__ import division, print_function, with_statement
my_list =["abc 123","acd 234","NSW = 500", "stuff","morestuff"]
for index in xrange(len(my_list)):
    if "NSW" in my_list[index]:
        my_list[index] = "NSW = 0"

print (my_list)

['abc 123', 'acd 234', 'NSW = 0', 'stuff', 'morestuff']

my_list =["abc 123","acd 234","NSW = 500", "stuff","morestuff"]

print ["NSW = 0" if "NSW" in _ else _ for _ in my_list]

['abc 123', 'acd 234', 'NSW = 0', 'stuff', 'morestuff']

或者，您可以使用列表理解来实现以下目的：

代码：

from __future__ import division, print_function, with_statement
my_list =["abc 123","acd 234","NSW = 500", "stuff","morestuff"]
for index in xrange(len(my_list)):
    if "NSW" in my_list[index]:
        my_list[index] = "NSW = 0"

print (my_list)

['abc 123', 'acd 234', 'NSW = 0', 'stuff', 'morestuff']

my_list =["abc 123","acd 234","NSW = 500", "stuff","morestuff"]

print ["NSW = 0" if "NSW" in _ else _ for _ in my_list]

['abc 123', 'acd 234', 'NSW = 0', 'stuff', 'morestuff']

输出：

from __future__ import division, print_function, with_statement
my_list =["abc 123","acd 234","NSW = 500", "stuff","morestuff"]
for index in xrange(len(my_list)):
    if "NSW" in my_list[index]:
        my_list[index] = "NSW = 0"

print (my_list)

['abc 123', 'acd 234', 'NSW = 0', 'stuff', 'morestuff']

my_list =["abc 123","acd 234","NSW = 500", "stuff","morestuff"]

print ["NSW = 0" if "NSW" in _ else _ for _ in my_list]

['abc 123', 'acd 234', 'NSW = 0', 'stuff', 'morestuff']

另一个解决方案： 代码：

from __future__ import division, print_function, with_statement
my_list =["abc 123","acd 234","NSW = 500", "stuff","morestuff"]
for index in xrange(len(my_list)):
    if "NSW" in my_list[index]:
        my_list[index] = "NSW = 0"

print (my_list)

['abc 123', 'acd 234', 'NSW = 0', 'stuff', 'morestuff']

my_list =["abc 123","acd 234","NSW = 500", "stuff","morestuff"]

print ["NSW = 0" if "NSW" in _ else _ for _ in my_list]

['abc 123', 'acd 234', 'NSW = 0', 'stuff', 'morestuff']

输出：

from __future__ import division, print_function, with_statement
my_list =["abc 123","acd 234","NSW = 500", "stuff","morestuff"]
for index in xrange(len(my_list)):
    if "NSW" in my_list[index]:
        my_list[index] = "NSW = 0"

print (my_list)

['abc 123', 'acd 234', 'NSW = 0', 'stuff', 'morestuff']

my_list =["abc 123","acd 234","NSW = 500", "stuff","morestuff"]

print ["NSW = 0" if "NSW" in _ else _ for _ in my_list]

['abc 123', 'acd 234', 'NSW = 0', 'stuff', 'morestuff']

或者，您可以使用列表理解来实现以下目的：

代码：

from __future__ import division, print_function, with_statement
my_list =["abc 123","acd 234","NSW = 500", "stuff","morestuff"]
for index in xrange(len(my_list)):
    if "NSW" in my_list[index]:
        my_list[index] = "NSW = 0"

print (my_list)

['abc 123', 'acd 234', 'NSW = 0', 'stuff', 'morestuff']

my_list =["abc 123","acd 234","NSW = 500", "stuff","morestuff"]

print ["NSW = 0" if "NSW" in _ else _ for _ in my_list]

['abc 123', 'acd 234', 'NSW = 0', 'stuff', 'morestuff']

输出：

from __future__ import division, print_function, with_statement
my_list =["abc 123","acd 234","NSW = 500", "stuff","morestuff"]
for index in xrange(len(my_list)):
    if "NSW" in my_list[index]:
        my_list[index] = "NSW = 0"

print (my_list)

['abc 123', 'acd 234', 'NSW = 0', 'stuff', 'morestuff']

my_list =["abc 123","acd 234","NSW = 500", "stuff","morestuff"]

print ["NSW = 0" if "NSW" in _ else _ for _ in my_list]

['abc 123', 'acd 234', 'NSW = 0', 'stuff', 'morestuff']

如果您正在按索引执行替换，则实际上不需要

any

。去掉

any

。相反，如果在i:中使用“NSW”，则使用

，如果您正在执行索引替换，则确实不需要任何
。请删除任何
。相反，如果i:

中的“NSW”，请使用

，对不起，我真的没有找到链接的线程。对不起，我真的没有找到链接的线程