答案：在Python中，字符串方法`split`用于将字符串根据指定的分隔符进行拆分。当你使用`a.split`而不提供任何参数时，默认会使用空格作为分隔符。但在此情况下，字符串`a`是一个数字转为的字符串，它不包含任何空格或其他默认分隔符，所以会报“empty separator”的错误。解释：1. 字符串的`split`
S.split(sep=None, maxsplit=-1) -> list of strings Return a list of the words in S, using sep as the delimiter string. If maxsplit is given, at most maxsplit splits are done. If sep is not specified or is None, any whitespace string is a separator and empty strings are removed ...
2. Create from a String with split() >>> talk_like_a_pirate_day = '9/19/2019' >>> talk_like_a_pirate_day.split('/') ['9', '19', '2019'] 3. Get an Item by [offset]/slice The reverse() function changes the list but doesn’t return its value.As you saw with strings, ...
It might appear at first that the default separator for split is a single space ' ', but as per the docs If sep is not specified or is None, a different splitting algorithm is applied: runs of consecutive whitespace are regarded as a single separator, and the result will contain no ...
#('Ilikeeatbananasandapples,jikelike','apples','')。rsplit(separator,max)从右侧开始将字符串拆分为列表。如果未指定"max",则此方法将返回与split()方法相同的结果。如果字符串未匹配的指定的分隔符,则返回一个由源字符串作为独立元素组成的列表,如:...
17、The first argument to the split() method is None, which means “split on any whitespace (tabs or spaces, it makes no difference).” The second argument is 3, which means “split on whitespace 3 times, then leave the rest of the line alone.” ...
print(str1.rsplit(',', 1)) # Split the string 'str1' into a list of substrings using the ',' separator, starting from the right. # Split at most 2 times and print the result. print(str1.rsplit(',', 2)) # Split the string 'str1' into a list of substrings using the ',...
(road,data): city = road.split("-->") incomeComeList = [] incomeGoList = [] productPriceMap = {} for item in data: if(item['sourceCity'] == item['targetCity']): productPriceMap[item['name']] = item['price'] for item in data: if(item['sourceCity'] == city[0] and ...
cp.split(java.io.File.pathSeparator) } val libraryPathConf = "spark.driver.extraLibraryPath" val libraryPathEntries = sys.props.get(libraryPathConf).toSeq.flatMap { cp => cp.split(java.io.File.pathSeparator) } val extraJavaOptsConf = "spark.driver.extraJavaOptions" ...
()`` method, such asa file handle (e.g. via builtin ``open`` function) or ``StringIO``.sep : str, default ','Delimiter to use. If sep is None, the C engine cannot automatically detectthe separator, but the Python parsing engine can, meaning the latter willbe used and ...