Question

我想替换包含某个子字符串的列表中的项目。在这种情况下，任何形式的包含“NSW”（大写字母都很重要）的项目应替换为“NSW = 0”。原始条目是“NSW = 500”还是“NSW = 501”并不重要。我可以找到列表项，但不知何故，我找不到列表中的位置，所以我可以替换它？这就是我提出的，但我替换了所有项目：

function column(){
  var cell1={x0:21,y0:25,x1:163,y1:165};
var x=$('#x').html();
var y=$('#y').html();
/*
  console.log(x);
  console.log(y);
  console.log(cell1['x0']);
  console.log(cell1['x1']);
  console.log(cell1['y0']);
  console.log(cell1['y1']);
*/
if (x>=cell1['x0'] && x<=cell1['x1'] && y>=cell1['y0'] && y<=cell1['y1'])
{
console.log('cell oone');
}
else {
console.log('other cell');

}

Answer 1

简单<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:id="@+id/main" //add this android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_margin="10dp" android:clickable="true" //add this android:focusable="true" //add this android:elevation="4dp"> ... ... <ImageView android:id="@+id/img_download" android:clickable="true" //add this android:focusable="true" //add this android:layout_width="25dp" android:layout_height="25dp" android:layout_margin="5dp" android:tint="@color/primary" app:layout_constraintBottom_toBottomOf="parent" app:layout_constraintEnd_toEndOf="parent" app:layout_constraintTop_toTopOf="parent" app:srcCompat="@drawable/ic_drawer_download" /> </android.support.constraint.ConstraintLayout>：

list comprehension

#driver values：

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

Answer 2

any不会为您提供索引，并且在每次迭代时始终为true。所以放弃它......

就个人而言，我会使用列表理解与三元组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']

Answer 3

另一个解决方案：的码

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)

<强>输出：

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

或者你可以按目的使用列表理解：

<强>码

my_list =["abc 123","acd 234","NSW = 500", "stuff","morestuff"] print ["NSW = 0" if "NSW" in _ else _ for _ in my_list]

<强>输出：

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

如果存在子串，则python查找并替换列表项

3 个答案: