Spellchecker for source code.


Check for typos in all text files in the current directory, recursively

$ codespell

Correct all typos found in-place
$ codespell --write-changes

Skip files with names that match the specified pattern (accepts a comma-separated list of patterns using wildcards)
$ codespell --skip "[pattern]"

Use a custom dictionary file when checking (--dictionary can be used multiple times)
$ codespell --dictionary [path/to/file.txt]

Do not check words that are listed in the specified file
$ codespell --ignore-words [path/to/file.txt]

Do not check the specified words
$ codespell --ignore-words-list [words,to,ignore]

Print 3 lines of context around, before or after each match
$ codespell --[context|before-context|after-context] [3]

Check file names for typos, in addition to file contents
$ codespell --check-filenames


codespell [OPTIONS] [file1 file2 ... fileN]


codespell is designed to find and fix common misspellings in text files. It is designed primarily for checking misspelled words in source code, but it can be used with other files as well.

usage: codespell [-h] [--version] [-d] [-c] [-w] [-D DICTIONARY]

[--builtin BUILTIN-LIST] [--ignore-regex IGNORE_REGEX] [-I FILE] [-L WORDS] [-r REGEX] [-s] [--count] [-S SKIP] [-x FILE] [-i INTERACTIVE] [-q QUIET_LEVEL] [-e] [-f] [-H] [-A LINES] [-B LINES] [-C LINES] [--config CONFIG] [files ...]

positional arguments:


files or directories to check

optional arguments:

-h, --help

show this help message and exit


show program's version number and exit

-d, --disable-colors

disable colors, even when printing to terminal (always set for Windows)

-c, --enable-colors

enable colors, even when not printing to terminal

-w, --write-changes

write changes in place if possible


custom dictionary file that contains spelling corrections. If this flag is not specified or equals "-" then the default dictionary is used. This option can be specified multiple times.

--builtin BUILTIN-LIST

comma-separated list of builtin dictionaries to include (when "-D -" or no "-D" is passed). Current options are: - 'clear' for unambiguous errors - 'rare' for rare but valid words - 'informal' for informal words - 'usage' for recommended terms - 'code' for words common to code and/or mathematics - 'names' for valid proper names that might be typos - 'en-GB_to_en-US' for corrections from en-GB to en-US The default is 'clear,rare'.

--ignore-regex IGNORE_REGEX

regular expression which is used to find patterns to ignore by treating as whitespace. When writing regexes, consider ensuring there are boundary non-word chars, e.g., "\Wmatch\W". Defaults to empty/disabled.

-I FILE, --ignore-words FILE

file that contains words which will be ignored by codespell. File must contain 1 word per line. Words are case sensitive based on how they are written in the dictionary file

-L WORDS, --ignore-words-list WORDS

comma separated list of words to be ignored by codespell. Words are case sensitive based on how they are written in the dictionary file

-r REGEX, --regex REGEX

regular expression which is used to find words. By default any alphanumeric character, the underscore, the hyphen, and the apostrophe is used to build words. This option cannot be specified together with --writechanges.

-s, --summary

print summary of fixes


print the number of errors as the last line of stderr

-S SKIP, --skip SKIP

comma-separated list of files to skip. It accepts globs as well. E.g.: if you want codespell to skip .eps and .txt files, you'd give "*.eps,*.txt" to this option.

-x FILE, --exclude-file FILE

FILE with lines that should not be checked for errors or changed


set interactive mode when writing changes: - 0: no interactivity. - 1: ask for confirmation. - 2: ask user to choose one fix when more than one is


- 3: both 1 and 2

-q QUIET_LEVEL, --quiet-level QUIET_LEVEL

bitmask that allows suppressing messages: - 0: print all messages. - 1: disable warnings about wrong encoding. - 2: disable warnings about binary files. - 4: omit warnings about automatic fixes that were

disabled in the dictionary.

- 8: don't print anything for non-automatic fixes. - 16: don't print the list of fixed files. As usual with bitmasks, these levels can be combined; e.g. use 3 for levels 1+2, 7 for 1+2+4, 23 for 1+2+4+16, etc. The default mask is 2.

-e, --hard-encoding-detection

use chardet to detect the encoding of each file. This can slow down codespell, but is more reliable in detecting encodings other than utf-8, iso8859-1, and ascii.

-f, --check-filenames

check file names as well

-H, --check-hidden

check hidden files and directories (those starting with ".") as well.

-A LINES, --after-context LINES

print LINES of trailing context

-B LINES, --before-context LINES

print LINES of leading context

-C LINES, --context LINES

print LINES of surrounding context

--config CONFIG

path to config file.



Lucas De Marchi <>

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