Unexplainable leading space only in first value when reading from csv
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I am reading some values from a .csv and for some reason a space is being appended to the start of the first value. Does anyone know why this may be?
with open('input.csv') as csv_file: csv_reader = csv.reader(csv_file) for row in csv_reader: host = row destination = row port = row print("HOST") print(host)
Note that the input.csv does not have any spaces at the beginning of the first value. Also using lstrip() does not seem to fix this.
It's probably a ZERO WIDTH NO-BREAK SPACE (U+FEFF) code point and is used as a byte-order mark (BOM) for UTF16- and UTF32-encoded files and a signature for UTF-8-encoded files. It isn't removed by
open('input.csv',encoding='utf-8-sig') removes the signature if present, assuming your .CSV is encoded in UTF-8. Other options are
utf32. They require the BOM and remove it as well, but most likely it is UTF-8.
print(ascii(host)) to see what the character actually is:
>>> host = '\ufeffBob' >>> print(x) Bob >>> print(ascii(x)) '\ufeffBob'
Remove leading and trailing whitespace from a csv file with Python , I'm reading a csv file with the Python csv module and could not find a setting to remove trailing but it I think it only applies to leading whitespace. leading and trailing whitespace from all values reader = ( dict((k, v.strip()) for In a CSV file, if there is a extra space after the requirement tag, the hierarchy of the requirements is lost. This problem is usually seen when a view is exported to a csv file. To make sure that the hierarchy is not lost please follow the following steps to remove the extra space.
with open('input.csv') as csv_file: csv_reader = csv.reader(csv_file) for row in csv_reader: host = row host = host.strip() # choo off whitespace destination = row port = row print("HOST") print(host)
side by Note:
csv_reader = csv.reader(csv_file, skipinitialspace=True)
skipinitialspace: If set to True, any white space immediately following the delimiter is ignored.
Talk:Comma-separated values, "According to RFC 4180, spaces outside quotes in a *TEXTDATA does permit leading spaces (and as field data), but DQUOTE is not an element of Consequently, the BNF only explicitly permits the To your first question about common practice, many CSV Hello, I have a CSV file that has a whitespace before comma and when I use csvread it adds more columns of data than it has. For example, following are the contents of the csv file.
with open('input.csv') as csv_file: csv_reader = csv.reader(csv_file) for row in csv_reader: host = row destination = row port = row print("HOST") print(host) # Remove spaces by treating strings print(host.strip()) # Default is a blank character
Ignore consecutive whitespaces with CSV.read() - Data, that contains many consecutive spaces between columns because the colmuns are padded. Have you tried CSV.read(filename, delim=delim) without anything else? tabs)? I think it should work if you only give it that and nothing else, otherwise you'll I should add that it is not just the first column with all missing values. The Read CSV File dialog reads CSV format text data files that use a comma, a semicolon, or a tab as the delimiter between values.. If the text file uses a different delimiter, contains text at the beginning of the file that is not variable names or data values, or has other special considerations, use the Text Wizard to read the files.
10 Awk Tips, Tricks and Pitfalls, The value of NR starts at 1 and always increases until the program terminates. So, the condition "NR==FNR" is only true while awk is reading the first file. Simple CSV files (with fields separated by commas, and commas cannot appear better to parse using FS=',' and remove leading and trailing spaces from each field: CSV Kit is the best utility that I’ve found for working with CSV files. It’s a free set of tools for dealing with CSV files on Linux. Some of the cool things it can do are: CSV clean will validate and clean the file of common syntax errors. It isn’t magic, but can definitely help. CSV grep is incredibly useful.
Worksheet, I am reading some values from a csv and for some reason a space is being appended to the start of the first value Does anyone know why this may be INPUT Reading a text file is a very common task in Perl. For example, you often come across reading CSV(Comma-Separated Value) files to extract data and information. A CSV file can be created with the use of any text editor such as notepad, notepad++, etc.
How to remove spaces in a csv file which affect the hierarchy of , Do strange, unexplained things happen on the International Space Station? CSV stands for 'comma-separated values'- read (more explanation here). This occurs when they top up the oxygen supply on board the ISS. The reset field will only have data in the first row created after each boot of the Astro Pi, and at all Where can I find documentation about the csv format used for question input? I'm working on writing small programs to auto-generate question banks. I've found the sample csv file from my institution (I can only assume that this is the same for everyone) but I can't seem to discern a pattern.
print(ascii(host))and show the result.
- @OamarKanji, is this the First Value only
HOST Ben? can you show the desired result please.
- There are three columns in the csv: Host, Destination, Port but only the value in the very first row of the very first column is effected by this
- I have now included a screen shot of the input csv in the question
- Okay, what about trying like
host = row.strip()or in next line
- Thanks, but still not working even though I dont see why it wouldnt work