explode

问题 I have a dataframe df like below NETWORK config_id APPLICABLE_DAYS Case Delivery 0 Grocery 5399 SUN 10 1 1 Grocery 5399 MON 20 2 2 Grocery 5399 TUE 30 3 3 Grocery 5399 WED 40 4 I want to implode( combine Applicable_days from multiple rows into single row like below) and get the average case and delivery per config_id NETWORK config_id APPLICABLE_DAYS Avg_Cases Avg_Delivery 0 Grocery 5399 SUN,MON,TUE,WED 90 10 using the groupby on network,config_id i can get the avg_cases and avg_delivery like

问题 I have a form where I want a user to enter one or more words. These words should then match mutiple columns in a MySQL database. I have started to build some code but I'm stuck. <?php $term = $_SESSION['session_searchstring']; //Let's say that session is John Doe $searchterm = explode(' ',$term); $searchFieldName = "name"; $searchCondition = "$searchFieldName LIKE '%" . implode("%' OR $searchFieldName LIKE '%", $searchterm) . "%'"; $sql = "SELECT * FROM students WHERE $searchCondition;"; echo

问题 I have a form where I want a user to enter one or more words. These words should then match mutiple columns in a MySQL database. I have started to build some code but I'm stuck. <?php $term = $_SESSION['session_searchstring']; //Let's say that session is John Doe $searchterm = explode(' ',$term); $searchFieldName = "name"; $searchCondition = "$searchFieldName LIKE '%" . implode("%' OR $searchFieldName LIKE '%", $searchterm) . "%'"; $sql = "SELECT * FROM students WHERE $searchCondition;"; echo

问题 I'm trying to split a string after x characters and put it in array. But I need to don't cut word if x is in a middle of a word. What I expect is to split on the word inferior. I Tried this : CODE $string = "Helllooooo I'mmm <strong>theeeeee</strong> <em> woooooorrd</em> theeee loooonnngessttt"; $desired_width = 24; $str = wordwrap($string, $desired_width, "\n"); var_dump($str); die; OUTPUT string 'Helllooooo I'mmm <strong>theeeeee</strong> <em> woooooorrd</em> theeee loooonnngessttt' (length

问题 I've searched for hours. How can I separate a string by a "\" I need to separate HORSE\COW into two words and lose the backslash. 回答1: $array = explode("\\",$string); This will give you an array, for "HORSE\COW" it will give $array[0] = "HORSE" and $array[1] = "COW" . With "HORSE\COW\CHICKEN" , $array[2] would be "CHICKEN" Since backslashes are the escape character, they must be escaped by another backslash. 回答2: You would use explode() and escape the escape character ( \ ). $str = 'HORSE\COW

问题 I have the following dummy dataframe: df = pd.DataFrame({'Col1':['a,b,c,d', 'e,f,g,h', 'i,j,k,l,m'], 'Col2':['aa~bb~cc~dd', np.NaN, 'ii~jj~kk~ll~mm']}) Col1 Col2 0 a,b,c,d aa~bb~cc~dd 1 e,f,g,h NaN 2 i,j,k,l,m ii~jj~kk~ll~mm The real dataset has shape 500000, 90 . I need to unnest these values to rows and I'm using the new explode method for this, which works fine. The problem is the NaN , these will cause unequal lengths after the explode , so I need to fill in the same amount of delimiters

问题 I have the following dummy dataframe: df = pd.DataFrame({'Col1':['a,b,c,d', 'e,f,g,h', 'i,j,k,l,m'], 'Col2':['aa~bb~cc~dd', np.NaN, 'ii~jj~kk~ll~mm']}) Col1 Col2 0 a,b,c,d aa~bb~cc~dd 1 e,f,g,h NaN 2 i,j,k,l,m ii~jj~kk~ll~mm The real dataset has shape 500000, 90 . I need to unnest these values to rows and I'm using the new explode method for this, which works fine. The problem is the NaN , these will cause unequal lengths after the explode , so I need to fill in the same amount of delimiters

来源： https://stackoverflow.com/questions/62825001/how-to-explode-panda-column-with-data-having-different-dict-and-list-of-dict

问题 Using Pandas 0.25.3, trying to explode a couple of columns. Data looks like: d1 = {'user':['user1','user2','user3','user4'], 'paid':['Y','Y','N','N'] 'last_active':['11 Jul 2019','23 Sep 2018','08 Dec 2019','03 Mar 2018'], 'col4':'data'} I sent this to a dataframe df=pd.DataFrame([d1],columns=d1.keys()) that looks like this: user paid last_active col4 ['user1','user2','user3','user4'] ['Y','Y','N','N'] ['11 Jul 2019','23 Sep 2018','08 Dec 2019','03 Mar 2018'] 'data' there are other columns as

问题 i want to explode a string two time and make a multi-dimensional array. $data = "i love funny movies \n i love stackoverflow dot com \n i like rock song"; $data = explode("\n", $data); so a print_r($data); will output: Array ( [0] => i love funny movies [1] => i love stackoverflow com [2] => i like rock song ) now if i do like this: $line_data = explode(" ", $data); // explode $data variable by spaces. a print_r($line_data); will give me this: Array ( [0] => i [1] => love [2] => funny [3] =>