WebDec 31, 2024 · Teams. Q&A for work. Connect and share knowledge within a single location that is structured and easy to search. Learn more about Teams
Did you know?
WebSimply iterate over the .items () of the lookup dictionary, and call .replace with each. Since this method returns a new string, and does not (cannot) modify the string in place, we must reassign the results inside the loop: for to_replace, replacement in d.items (): s = s.replace (to_replace, replacement) WebJan 2, 2024 · Assuming your dictionary values are all lists which contain strings and you want to remove the value from any string containing it, you could try: for k, v in mydict.iteritems (): mydict [k] = [string.replace (val,'')] for string in v] Share Follow answered Jan 2, 2024 at 20:40 user8261637 101 2 Add a comment Your Answer Post Your Answer
WebNov 13, 2013 · I would like to go over it and replace some items for another strings. The strings to be find and the ones to replace them are also in a dictionary, in which the key is the string to be found and the value is the string to replace it: d_find_and_replace = {'wheels':'wheel', 'Field': 'field', 'animals':'plants'} I tried to use a function like: WebNov 3, 2013 · via dictionary unpacking. Since Python 3.5 you can also use dictionary unpacking for this: my_dict = { **my_dict, 'key1': 'value1', 'key2': 'value2'} Note: This …
WebApr 1, 2024 · If you can find a regex pattern covering all your keys, you could use re.sub for a very efficient solution : you only need one pass instead of parsing your whole text for each search term. In your title, you mention "replacing words". In that case, '\w+' would work just fine. import re fields = {"pattern 1": "replacement text 1", "pattern 2 ... WebAug 25, 2024 · If one wants to change the key of a dictionary but keep the value, he/she might use: d [new_key] = d.pop [old_key] I want to modify all the keys (and keep the values in place) but the code below skips certain lines - ("col2") remains untouched. Is it because dictionaries are unordered and I keep changing the values in it?
WebNov 10, 2024 · In case of renaming all dictionary keys: target_dict = {'k1':'v1', 'k2':'v2', 'k3':'v3'} new_keys = ['k4','k5','k6'] for key,n_key in zip (target_dict.keys (), new_keys): target_dict [n_key] = target_dict.pop (key) Share Improve this answer edited Nov 8, 2024 at 9:09 Dave Liu 781 1 10 29 answered Jun 17, 2024 at 12:29 Ikbel 1,657 1 14 30 3
WebDec 11, 2013 · I am trying to make a program that will take an input, look to see if any of these words are a key in a previously defined dictionary, and then replace any found words with their entries. The hard bit is the "looking to see if words are keys". For example, if I'm trying to replace the entries in this dictionary: flip flops with fabric between toesWebJul 29, 2013 · Below is more generalized utility function that replaces existing keys with new set of keys recursively. def update_dict_keys (obj, mapping_dict): if isinstance (obj, dict): return {mapping_dict [k]: update_dict_keys (v, mapping_dict) for k, … greatest athletes of all time listWebApr 8, 2024 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question.Provide details and share your research! But avoid …. Asking for help, clarification, or responding to other answers. flip flops with built in bottle openerWebOct 14, 2015 · So far I have only written code to make the dictionary names = {} for line in open ("text.txt", 'r'): item = line.split () key, value = item [0], item [2] names [key] = value I want to open a second file and use the names dictionary to replace the keys that appear there with their values. greatest athletes of the 70sWebTo replace the 'a' key with 'aa', we can do this: new_key = 'aa' old_key = 'a' dictionary [new_key] = dictionary.pop (old_key) Giving us: {'b': 2.0, 'c': 3.0, 'aa': 1.0} Other ways to make a dictionary: dictionary = {k: v for k, v in zip (keys, values)} dictionary = dict (zip (keys, values)) Where 'keys' and 'values' are both lists. Share Follow greatest athletes of all time 2021WebMar 25, 2024 · In a dictionary, the keys need to be unique but the values mapped can have duplicate values. And using the keys, we can find and replace values mapped to it. We … flip flops with fleece on themWebdef appendabc (somedict): return dict (map (lambda (key, value): (str (key)+"abc", value), somedict.items ())) def transform (multilevelDict): new = appendabc (multilevelDict) for key, value in new.items (): if isinstance (value, dict): new [key] = transform (value) return new print transform ( {1:2, "bam":4, 33: {3:4, 5:7}}) greatest atrocities in history