csv

问题 Can anybody please tell me what its checking in following condition. if (s.IndexOfAny("\",\x0A\x0D".ToCharArray()) > -1) 回答1: It's checking if there is any Quotation Mark " , Comma , , a Line Feed \x0A or Carriage Return \x0D in the string s . \x0A is the escaped hexadecimal Line Feed. The equivalent of \n . \x0D is the escaped hexadecimal Carriage Return. The equivalent of \r . 回答2: \x0A\x0D are escaped hexadecimal carriage return and line feed characters. 来源： https://stackoverflow.com

问题 Can anybody please tell me what its checking in following condition. if (s.IndexOfAny("\",\x0A\x0D".ToCharArray()) > -1) 回答1: It's checking if there is any Quotation Mark " , Comma , , a Line Feed \x0A or Carriage Return \x0D in the string s . \x0A is the escaped hexadecimal Line Feed. The equivalent of \n . \x0D is the escaped hexadecimal Carriage Return. The equivalent of \r . 回答2: \x0A\x0D are escaped hexadecimal carriage return and line feed characters. 来源： https://stackoverflow.com

问题 I have a loop like foreach ($_GET as $name => $value) { echo "$value\n"; } And I want to add a comma in between each item so it ends up like this. var1, var2, var3 Since I am using foreach I have no way to tell what iteration number I am on. How could I do that? 回答1: Just build your output with your foreach and then implode that array and output the result : $out = array(); foreach ($_GET as $name => $value) { array_push($out, "$name: $value"); } echo implode(', ', $out); 回答2: Like this:

问题 When reading a CSV, instead of skipping first line (header), and reading row items by number: with open('info.csv') as f: reader = csv.reader(f, delimiter=';') next(reader, None) for row in reader: name = row[0] blah = row[1] is there a built-in way to access row items by making use of header name? Something like: with open('info.csv') as f: reader = csv.reader(f, delimiter=';', useheader=True) for row in reader: name = row['name'] blah = row['blah'] where info.csv has a header line: name

问题 When reading a CSV, instead of skipping first line (header), and reading row items by number: with open('info.csv') as f: reader = csv.reader(f, delimiter=';') next(reader, None) for row in reader: name = row[0] blah = row[1] is there a built-in way to access row items by making use of header name? Something like: with open('info.csv') as f: reader = csv.reader(f, delimiter=';', useheader=True) for row in reader: name = row['name'] blah = row['blah'] where info.csv has a header line: name

问题 I have this line as an example from a CSV file: 2412,21,"Which of the following is not found in all cells?","Curriculum","Life and Living Processes, Life Processes",,,1,0,"endofline" I want to split it into an array. The immediate thought is to just split on commas, but some of the strings have commas in them, eg "Life and Living Processes, Life Processes", and these should stay as single elements in the array. Note also that there's two commas with nothing in between - i want to get these as

问题 I have a pandas dataframe like this: '' count sugar 420 milk 108 vanilla 450 ... The first column has no header and I would like to give it the name: 'ingredient'. I created the dataframe from a csv file: df = pd.read_csv('./data/file_name.csv', index_col=False, encoding="ISO-8859-1") df = df['ingredient_group'] #selecting column df = df.value_counts() #calculating string occurance which return series obj df = pd.DataFrame(df) #creating dataframe from series obj How do I assign the name

问题 I am trying to convert a table in HTML to a csv in Python. The table I am trying to extract is this one: <table class="tblperiode"> <caption>Dades de període</caption> <tr> <th class="sortable"><span class="tooltip" title="Període (Temps Universal)">Període</span><br/>TU</th> <th><span class="tooltip" title="Temperatura mitjana (°C)">TM</span><br/>°C</th> <th><span class="tooltip" title="Temperatura màxima (°C)">TX</span><br/>°C</th> <th><span class="tooltip" title="Temperatura mínima (°C)"

问题 I am trying to convert a table in HTML to a csv in Python. The table I am trying to extract is this one: <table class="tblperiode"> <caption>Dades de període</caption> <tr> <th class="sortable"><span class="tooltip" title="Període (Temps Universal)">Període</span><br/>TU</th> <th><span class="tooltip" title="Temperatura mitjana (°C)">TM</span><br/>°C</th> <th><span class="tooltip" title="Temperatura màxima (°C)">TX</span><br/>°C</th> <th><span class="tooltip" title="Temperatura mínima (°C)"

问题 My script that reads image links from an input csv, and performs quality checks on each of those images. It will then append the data from the checks to a new csv. Obviously, doing several checks on each line will be a limiting factor, but I am trying to determine a way to speed up the processing. I thought about reading in multiple lines at one time, but would that help? What would be some suggested ways to speed this script up? # runs each check as needed def add_to_row(row, line_num): # my