comma

问题 we can simply use: crc = struct.unpack('>i', data) why people like this: (crc,) = struct.unpack('>i', data) what does the comma mean? 回答1: The first variant returns a single-element tuple: In [13]: crc = struct.unpack('>i', '0000') In [14]: crc Out[14]: (808464432,) To get to the value, you have to write crc[0] . The second variant unpacks the tuple, enabling you to write crc instead of crc[0] : In [15]: (crc,) = struct.unpack('>i', '0000') In [16]: crc Out[16]: 808464432 回答2: the unpack

问题 In mainland europe, the csv files are separated through semicolons because numbers have , in them instead of . So, i am trying to write a semicolonSeparatedList same as commaSeparatedList but with ; instead of ,: _semicolonsepitem = Combine(OneOrMore(Word(printables, excludeChars=';') + Optional( Word(" \t") + ~Literal(";") + ~LineEnd() ) ) ).streamline().setName("semicolonItem") semicolonSeparatedList = delimitedList( Optional( quotedString.copy() | _semicolonsepitem, default="") ).setName(

问题 In Python, a variable or literal followed by a hanging comma is a one- tuple : 1, # (1,) ...and a series of comma-separated variables/literals (whether or not they are followed by a hanging comma) is also a tuple : 1,2, # (1,2) 1,2 # (1,2) However, inside a callable/function, this syntax is treated differently, because the comma is used for separation of arguments: bool(5>6,) # False - 5>6 == False bool((5>6,)) # True - (5>6,) is a non-empty tuple (always True - contents ignored) The first

问题 Below is a couple of rows of some test data I am using. I am wanting to count the frequency of all the characters in the ICD10Code column which are separated by columns. From the segment of code below, I used group_by because every "PatientId" value had duplicates in that column but had unique values in other columns. How can I go about counting the frequency of all character values? PatientId ReferralSource NextAppt Age InsuranceName ICD10Code 1584 St Francis Y 34 SLIDING FEE SCHEDULE M5136,

问题 I have a javascript program to write values to a csv file. I have a value that includes comma within. How to do this? I am newbie to javascript. can you please help me? I tried double quotes content += record.number +","+ record.category +","+ record.status +","+ record.approval_status +","+ record.requested_by +","+ record.assigned_to +","+record.assign_dept +","+ record.coordinator +","+ record.coord_phone +","+ record.planned_start +","+ record.planned_end +","+record.reason +","+ record

问题 This is the original prompt: Write program that gets a comma-delimited String of integers (e.g. “4,8,16,32,…”) from the user at the command line and then converts the String to an ArrayList of Integers (using the wrapper class) with each element containing one of the input integers in sequence. Finally, use a for loop to output the integers to the command line, each on a separate line. import java.util.Scanner; import java.util.ArrayList; public class Parser { public static void main(String[]

问题 This is the original prompt: Write program that gets a comma-delimited String of integers (e.g. “4,8,16,32,…”) from the user at the command line and then converts the String to an ArrayList of Integers (using the wrapper class) with each element containing one of the input integers in sequence. Finally, use a for loop to output the integers to the command line, each on a separate line. import java.util.Scanner; import java.util.ArrayList; public class Parser { public static void main(String[]

问题 So my arduino is receiving a string from serial, comprising of three values separated by commas, I'm trying to separate these values into three different variables, the rest I can do. The string looks something like this "1000,1.5,0.9" or "5000,20,0.01" I would like something like: a - 1000, b - 1.5, c - 0.9 Cheers 回答1: I presume you are receiving the string that can be split in to three parts. Here's a sample code taken from this thread: void setup(){ Serial.begin(9600); } void loop(){

问题 So my arduino is receiving a string from serial, comprising of three values separated by commas, I'm trying to separate these values into three different variables, the rest I can do. The string looks something like this "1000,1.5,0.9" or "5000,20,0.01" I would like something like: a - 1000, b - 1.5, c - 0.9 Cheers 回答1: I presume you are receiving the string that can be split in to three parts. Here's a sample code taken from this thread: void setup(){ Serial.begin(9600); } void loop(){

问题 So my arduino is receiving a string from serial, comprising of three values separated by commas, I'm trying to separate these values into three different variables, the rest I can do. The string looks something like this "1000,1.5,0.9" or "5000,20,0.01" I would like something like: a - 1000, b - 1.5, c - 0.9 Cheers 回答1: I presume you are receiving the string that can be split in to three parts. Here's a sample code taken from this thread: void setup(){ Serial.begin(9600); } void loop(){