How do I parse the elements in this list?

I have a list to parse, (but I am finding a generic way to parse any list like this):

dev-libs/icu-63.1-r1 alpha amd64 arm arm64 ia64 ppc ppc64 x86 hppa s390 dev-libs/icu-layoutex-63.1 alpha amd64 ia64 ppc ppc64 x86 hppa sparc dev-lang/perl-5.28-r1 s390 virtual/ruby_gems-0.3_pre24 amd64 x86

This seems to fall sometimes, because it tries the parse the architectures list like starting with alpha till the end of line, but I really want to ignore everything after a package version but leave the posibility of space existence after a version.

My code is following: (print stuff just for debug)

for line in args.list:

    print(line)

    package_category = re.search(r'((?<==)w+-w+|w+-w+|w+)', line).group(0)

    print(package_category)

    package_name = re.search(r'(?<=/)[a-z]+.[a-z]+', line).group(0)

    print(package_name)

    package_version = re.search(r'(?<=-)d+.d-*w*s?', line).group(0)

I expect this to do following:

package_category variable should contain a category like:

dev-libs dev-lang virtual

package_name should contain a package name, like:

icu icu-layoutex perl ruby_gems

package_version:

63.1-r1 63.1 0.3_pre24

the rest should be just ignored

currently I suddenly hit the architrctures list somehow with the output:

dev-libs/icu-63.1-r1 dev-libs icu alpha alpha Traceback (most recent call last): File "./repomator.py", line 47, in <module> package_name = re.search(r'(?<=/)[a-z]+.[a-z]+', line).group(0) AttributeError: 'NoneType' object has no attribute 'group'

edited Jan 1 at 13:00

asked Jan 1 at 12:47

Misha Lavrov

I ran your code and it gave me exactly what you expect. Where are you failing?

– Aaron_ab
Jan 1 at 12:54

Why not a list of package_category that contains all the strings before / and a list of package_name that contains all the strings after / but before second occurrence of -and a list of package_version that contains all the strings after second occurrence of - and before empty " "

– DirtyBit
Jan 1 at 12:54

@Aaron_ab I've edited the OP to include the error I hit

– Misha Lavrov
Jan 1 at 13:01

add a comment |

I have a list to parse, (but I am finding a generic way to parse any list like this):

My code is following: (print stuff just for debug)

for line in args.list:

    print(line)

    package_category = re.search(r'((?<==)w+-w+|w+-w+|w+)', line).group(0)

    print(package_category)

    package_name = re.search(r'(?<=/)[a-z]+.[a-z]+', line).group(0)

    print(package_name)

    package_version = re.search(r'(?<=-)d+.d-*w*s?', line).group(0)

I expect this to do following:

package_category variable should contain a category like:

dev-libs dev-lang virtual

package_name should contain a package name, like:

icu icu-layoutex perl ruby_gems

package_version:

63.1-r1 63.1 0.3_pre24

the rest should be just ignored

currently I suddenly hit the architrctures list somehow with the output:

edited Jan 1 at 13:00

asked Jan 1 at 12:47

Misha Lavrov

I ran your code and it gave me exactly what you expect. Where are you failing?

– Aaron_ab
Jan 1 at 12:54

Why not a list of package_category that contains all the strings before / and a list of package_name that contains all the strings after / but before second occurrence of -and a list of package_version that contains all the strings after second occurrence of - and before empty " "

– DirtyBit
Jan 1 at 12:54

@Aaron_ab I've edited the OP to include the error I hit

– Misha Lavrov
Jan 1 at 13:01

add a comment |

I have a list to parse, (but I am finding a generic way to parse any list like this):

My code is following: (print stuff just for debug)

for line in args.list:

    print(line)

    package_category = re.search(r'((?<==)w+-w+|w+-w+|w+)', line).group(0)

    print(package_category)

    package_name = re.search(r'(?<=/)[a-z]+.[a-z]+', line).group(0)

    print(package_name)

    package_version = re.search(r'(?<=-)d+.d-*w*s?', line).group(0)

I expect this to do following:

package_category variable should contain a category like:

dev-libs dev-lang virtual

package_name should contain a package name, like:

icu icu-layoutex perl ruby_gems

package_version:

63.1-r1 63.1 0.3_pre24

the rest should be just ignored

currently I suddenly hit the architrctures list somehow with the output:

edited Jan 1 at 13:00

asked Jan 1 at 12:47

Misha Lavrov

I have a list to parse, (but I am finding a generic way to parse any list like this):

My code is following: (print stuff just for debug)

for line in args.list:

    print(line)

    package_category = re.search(r'((?<==)w+-w+|w+-w+|w+)', line).group(0)

    print(package_category)

    package_name = re.search(r'(?<=/)[a-z]+.[a-z]+', line).group(0)

    print(package_name)

    package_version = re.search(r'(?<=-)d+.d-*w*s?', line).group(0)

I expect this to do following:

package_category variable should contain a category like:

dev-libs dev-lang virtual

package_name should contain a package name, like:

icu icu-layoutex perl ruby_gems

package_version:

63.1-r1 63.1 0.3_pre24

the rest should be just ignored

currently I suddenly hit the architrctures list somehow with the output:

python regex

edited Jan 1 at 13:00

asked Jan 1 at 12:47

Misha Lavrov

edited Jan 1 at 13:00

asked Jan 1 at 12:47

Misha Lavrov

edited Jan 1 at 13:00

asked Jan 1 at 12:47

Misha Lavrov

asked Jan 1 at 12:47

Misha Lavrov

asked Jan 1 at 12:47

Misha Lavrov

I ran your code and it gave me exactly what you expect. Where are you failing?

– Aaron_ab
Jan 1 at 12:54

Why not a list of package_category that contains all the strings before / and a list of package_name that contains all the strings after / but before second occurrence of -and a list of package_version that contains all the strings after second occurrence of - and before empty " "

– DirtyBit
Jan 1 at 12:54

@Aaron_ab I've edited the OP to include the error I hit

– Misha Lavrov
Jan 1 at 13:01

add a comment |

I ran your code and it gave me exactly what you expect. Where are you failing?

– Aaron_ab
Jan 1 at 12:54

Why not a list of package_category that contains all the strings before / and a list of package_name that contains all the strings after / but before second occurrence of -and a list of package_version that contains all the strings after second occurrence of - and before empty " "

– DirtyBit
Jan 1 at 12:54

@Aaron_ab I've edited the OP to include the error I hit

– Misha Lavrov
Jan 1 at 13:01

I ran your code and it gave me exactly what you expect. Where are you failing?

– Aaron_ab
Jan 1 at 12:54

Why not a list of package_category that contains all the strings before / and a list of package_name that contains all the strings after / but before second occurrence of -and a list of package_version that contains all the strings after second occurrence of - and before empty " "

– DirtyBit
Jan 1 at 12:54

@Aaron_ab I've edited the OP to include the error I hit

– Misha Lavrov
Jan 1 at 13:01

add a comment |

1 Answer
1

active

oldest

votes

Is that what you want:

(?P<category>w+(?:-w+)?)/(?P<name>[a-z]+(?:[-_][a-z]+)?)-(?P<version>S+)

Demo

Explanation:

(?<category>            # named group category

  w+                   # 1 or more word character

  (?:-w+)?             # optional, a dash then 1 or more word character

)                       # end group

/                       # a slash

(?<name>                # named group name

  [a-z]+                # 1 or more alpha

  (?:[-_][a-z]+)?       # optional, dash or underscore and 1 or more alpha

)                       # end group

-                       # a dash

(?<version>             # named group version

  S+                   # 1 or more non space character

)                       # end group

code:

import re



list = [

'dev-libs/icu-63.1-r1 alpha amd64 arm arm64 ia64 ppc ppc64 x86 hppa s390 ',

'dev-libs/icu-layoutex-63.1 alpha amd64 ia64 ppc ppc64 x86 hppa sparc',

'dev-lang/perl-5.28-r1 s390',

'virtual/ruby_gems-0.3_pre24 amd64 x86'

]

for line in list:

    res = re.search(r'(?P<category>w+(?:-w+)?)/(?P<name>[a-z]+(?:[-_][a-z]+)?)-(?P<version>S+)', line)

    print "cat: ",res.group('category'),"t  name: ",res.group('name'), "ttversion: ",res.group('version')

Output:

cat:  dev-libs    name:  icu        version:  63.1-r1

cat:  dev-libs    name:  icu-layoutex       version:  63.1

cat:  dev-lang    name:  perl       version:  5.28-r1

cat:  virtual     name:  ruby_gems      version:  0.3_pre24

edited Jan 1 at 13:17

answered Jan 1 at 13:03

Toto

66.1k175699

hmm, regex itself works, but when I try to assign the results into dictonary like this (for the further use): packages.append({ "category": res.group('category'), "name": res.group('name'), "version": res.group('version') }) I got error AttributeError: 'NoneType' object has no attribute 'group' Why does it try to perform search again, if this is already in group? :(

– Misha Lavrov
Jan 1 at 13:53

@MishaLavrov: I don't know too much python, but, I think dictionary haven't append method. And how do you use it? Are you doing the assignmentinside or outside the for loop? Inside the for loop, just add packages["category"] = res.group('category'), same for name and version. I've just tried it and it works fine.

– Toto
Jan 1 at 16:13

add a comment |

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1 Answer
1

active

oldest

votes

1 Answer
1

active

oldest

votes

Is that what you want:

(?P<category>w+(?:-w+)?)/(?P<name>[a-z]+(?:[-_][a-z]+)?)-(?P<version>S+)

Demo

Explanation:

(?<category>            # named group category

  w+                   # 1 or more word character

  (?:-w+)?             # optional, a dash then 1 or more word character

)                       # end group

/                       # a slash

(?<name>                # named group name

  [a-z]+                # 1 or more alpha

  (?:[-_][a-z]+)?       # optional, dash or underscore and 1 or more alpha

)                       # end group

-                       # a dash

(?<version>             # named group version

  S+                   # 1 or more non space character

)                       # end group

code:

import re



list = [

'dev-libs/icu-63.1-r1 alpha amd64 arm arm64 ia64 ppc ppc64 x86 hppa s390 ',

'dev-libs/icu-layoutex-63.1 alpha amd64 ia64 ppc ppc64 x86 hppa sparc',

'dev-lang/perl-5.28-r1 s390',

'virtual/ruby_gems-0.3_pre24 amd64 x86'

]

for line in list:

    res = re.search(r'(?P<category>w+(?:-w+)?)/(?P<name>[a-z]+(?:[-_][a-z]+)?)-(?P<version>S+)', line)

    print "cat: ",res.group('category'),"t  name: ",res.group('name'), "ttversion: ",res.group('version')

Output:

cat:  dev-libs    name:  icu        version:  63.1-r1

cat:  dev-libs    name:  icu-layoutex       version:  63.1

cat:  dev-lang    name:  perl       version:  5.28-r1

cat:  virtual     name:  ruby_gems      version:  0.3_pre24

edited Jan 1 at 13:17

answered Jan 1 at 13:03

Toto

66.1k175699

hmm, regex itself works, but when I try to assign the results into dictonary like this (for the further use): packages.append({ "category": res.group('category'), "name": res.group('name'), "version": res.group('version') }) I got error AttributeError: 'NoneType' object has no attribute 'group' Why does it try to perform search again, if this is already in group? :(

– Misha Lavrov
Jan 1 at 13:53

@MishaLavrov: I don't know too much python, but, I think dictionary haven't append method. And how do you use it? Are you doing the assignmentinside or outside the for loop? Inside the for loop, just add packages["category"] = res.group('category'), same for name and version. I've just tried it and it works fine.

– Toto
Jan 1 at 16:13

add a comment |

Is that what you want:

(?P<category>w+(?:-w+)?)/(?P<name>[a-z]+(?:[-_][a-z]+)?)-(?P<version>S+)

Demo

Explanation:

(?<category>            # named group category

  w+                   # 1 or more word character

  (?:-w+)?             # optional, a dash then 1 or more word character

)                       # end group

/                       # a slash

(?<name>                # named group name

  [a-z]+                # 1 or more alpha

  (?:[-_][a-z]+)?       # optional, dash or underscore and 1 or more alpha

)                       # end group

-                       # a dash

(?<version>             # named group version

  S+                   # 1 or more non space character

)                       # end group

code:

import re



list = [

'dev-libs/icu-63.1-r1 alpha amd64 arm arm64 ia64 ppc ppc64 x86 hppa s390 ',

'dev-libs/icu-layoutex-63.1 alpha amd64 ia64 ppc ppc64 x86 hppa sparc',

'dev-lang/perl-5.28-r1 s390',

'virtual/ruby_gems-0.3_pre24 amd64 x86'

]

for line in list:

    res = re.search(r'(?P<category>w+(?:-w+)?)/(?P<name>[a-z]+(?:[-_][a-z]+)?)-(?P<version>S+)', line)

    print "cat: ",res.group('category'),"t  name: ",res.group('name'), "ttversion: ",res.group('version')

Output:

cat:  dev-libs    name:  icu        version:  63.1-r1

cat:  dev-libs    name:  icu-layoutex       version:  63.1

cat:  dev-lang    name:  perl       version:  5.28-r1

cat:  virtual     name:  ruby_gems      version:  0.3_pre24

edited Jan 1 at 13:17

answered Jan 1 at 13:03

Toto

66.1k175699

hmm, regex itself works, but when I try to assign the results into dictonary like this (for the further use): packages.append({ "category": res.group('category'), "name": res.group('name'), "version": res.group('version') }) I got error AttributeError: 'NoneType' object has no attribute 'group' Why does it try to perform search again, if this is already in group? :(

– Misha Lavrov
Jan 1 at 13:53

@MishaLavrov: I don't know too much python, but, I think dictionary haven't append method. And how do you use it? Are you doing the assignmentinside or outside the for loop? Inside the for loop, just add packages["category"] = res.group('category'), same for name and version. I've just tried it and it works fine.

– Toto
Jan 1 at 16:13

add a comment |

Is that what you want:

(?P<category>w+(?:-w+)?)/(?P<name>[a-z]+(?:[-_][a-z]+)?)-(?P<version>S+)

Demo

Explanation:

(?<category>            # named group category

  w+                   # 1 or more word character

  (?:-w+)?             # optional, a dash then 1 or more word character

)                       # end group

/                       # a slash

(?<name>                # named group name

  [a-z]+                # 1 or more alpha

  (?:[-_][a-z]+)?       # optional, dash or underscore and 1 or more alpha

)                       # end group

-                       # a dash

(?<version>             # named group version

  S+                   # 1 or more non space character

)                       # end group

code:

import re



list = [

'dev-libs/icu-63.1-r1 alpha amd64 arm arm64 ia64 ppc ppc64 x86 hppa s390 ',

'dev-libs/icu-layoutex-63.1 alpha amd64 ia64 ppc ppc64 x86 hppa sparc',

'dev-lang/perl-5.28-r1 s390',

'virtual/ruby_gems-0.3_pre24 amd64 x86'

]

for line in list:

    res = re.search(r'(?P<category>w+(?:-w+)?)/(?P<name>[a-z]+(?:[-_][a-z]+)?)-(?P<version>S+)', line)

    print "cat: ",res.group('category'),"t  name: ",res.group('name'), "ttversion: ",res.group('version')

Output:

cat:  dev-libs    name:  icu        version:  63.1-r1

cat:  dev-libs    name:  icu-layoutex       version:  63.1

cat:  dev-lang    name:  perl       version:  5.28-r1

cat:  virtual     name:  ruby_gems      version:  0.3_pre24

edited Jan 1 at 13:17

answered Jan 1 at 13:03

Toto

66.1k175699

Is that what you want:

(?P<category>w+(?:-w+)?)/(?P<name>[a-z]+(?:[-_][a-z]+)?)-(?P<version>S+)

Demo

Explanation:

(?<category>            # named group category

  w+                   # 1 or more word character

  (?:-w+)?             # optional, a dash then 1 or more word character

)                       # end group

/                       # a slash

(?<name>                # named group name

  [a-z]+                # 1 or more alpha

  (?:[-_][a-z]+)?       # optional, dash or underscore and 1 or more alpha

)                       # end group

-                       # a dash

(?<version>             # named group version

  S+                   # 1 or more non space character

)                       # end group

code:

import re



list = [

'dev-libs/icu-63.1-r1 alpha amd64 arm arm64 ia64 ppc ppc64 x86 hppa s390 ',

'dev-libs/icu-layoutex-63.1 alpha amd64 ia64 ppc ppc64 x86 hppa sparc',

'dev-lang/perl-5.28-r1 s390',

'virtual/ruby_gems-0.3_pre24 amd64 x86'

]

for line in list:

    res = re.search(r'(?P<category>w+(?:-w+)?)/(?P<name>[a-z]+(?:[-_][a-z]+)?)-(?P<version>S+)', line)

    print "cat: ",res.group('category'),"t  name: ",res.group('name'), "ttversion: ",res.group('version')

Output:

cat:  dev-libs    name:  icu        version:  63.1-r1

cat:  dev-libs    name:  icu-layoutex       version:  63.1

cat:  dev-lang    name:  perl       version:  5.28-r1

cat:  virtual     name:  ruby_gems      version:  0.3_pre24

edited Jan 1 at 13:17

answered Jan 1 at 13:03

Toto

66.1k175699

edited Jan 1 at 13:17

answered Jan 1 at 13:03

Toto

66.1k175699

answered Jan 1 at 13:03

Toto

66.1k175699

answered Jan 1 at 13:03

Toto

66.1k175699

hmm, regex itself works, but when I try to assign the results into dictonary like this (for the further use): packages.append({ "category": res.group('category'), "name": res.group('name'), "version": res.group('version') }) I got error AttributeError: 'NoneType' object has no attribute 'group' Why does it try to perform search again, if this is already in group? :(

– Misha Lavrov
Jan 1 at 13:53

@MishaLavrov: I don't know too much python, but, I think dictionary haven't append method. And how do you use it? Are you doing the assignmentinside or outside the for loop? Inside the for loop, just add packages["category"] = res.group('category'), same for name and version. I've just tried it and it works fine.

– Toto
Jan 1 at 16:13

add a comment |

hmm, regex itself works, but when I try to assign the results into dictonary like this (for the further use): packages.append({ "category": res.group('category'), "name": res.group('name'), "version": res.group('version') }) I got error AttributeError: 'NoneType' object has no attribute 'group' Why does it try to perform search again, if this is already in group? :(

– Misha Lavrov
Jan 1 at 13:53

@MishaLavrov: I don't know too much python, but, I think dictionary haven't append method. And how do you use it? Are you doing the assignmentinside or outside the for loop? Inside the for loop, just add packages["category"] = res.group('category'), same for name and version. I've just tried it and it works fine.

– Toto
Jan 1 at 16:13

hmm, regex itself works, but when I try to assign the results into dictonary like this (for the further use):

packages.append({             "category": res.group('category'),             "name": res.group('name'),             "version": res.group('version')         })

I got error AttributeError: 'NoneType' object has no attribute 'group' Why does it try to perform search again, if this is already in group? :(

– Misha Lavrov
Jan 1 at 13:53

hmm, regex itself works, but when I try to assign the results into dictonary like this (for the further use):

packages.append({             "category": res.group('category'),             "name": res.group('name'),             "version": res.group('version')         })

I got error AttributeError: 'NoneType' object has no attribute 'group' Why does it try to perform search again, if this is already in group? :(

– Misha Lavrov
Jan 1 at 13:53

@MishaLavrov: I don't know too much python, but, I think dictionary haven't append method. And how do you use it? Are you doing the assignmentinside or outside the for loop? Inside the for loop, just add packages["category"] = res.group('category'), same for name and version. I've just tried it and it works fine.

– Toto
Jan 1 at 16:13

add a comment |

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