Nov 26, 2015 · For example (for Python 2): print "^" + str1 + "$" Or without + using f-strings in Python 3: print(f"^{str}$") Or if you want to add a prefix to every string in a list: strings = ['hello', 1, 'bye'] decoratedstrings = [f"^{s}$" for s in strings] result: ['^hello$', '^1$', '^bye$']

May 3, 2023 · Create two variables prefix and suffix with the desired string values. Use the reduce() function with a lambda expression to iterate through each element item in test_list, concatenate prefix to it, and append the result to pre_res.

Oct 6, 2022 · def fix_names(name, position, added_phrase): if position == "prefix": return f'{added_phrase} {name}' elif position == "suffix": return f'{name} {added_phrase}' print(fix_names("John", "suffix", "Dr."))

Let's say I have the following Python List: ['7831-0', nan, '3165-0', '7831-0', '7831-1'] I want to add the same prefix ('ADD_' to each element in the above list.

Feb 18, 2024 · Here, we use a lambda function to add the prefix to each string. Here’s an example: prefix = 'fruit_' fruits = ['apple', 'banana', 'cherry'] prefixed_fruits = list(map(lambda fruit: prefix + fruit, fruits)) Output: ['fruit_apple', 'fruit_banana', 'fruit_cherry']

May 30, 2024 · How to append a prefix to a List of String elements in Python? We can add a string prefix to all the elements present in the list using by iterating all the strings in the list and add a prefix to each string using append (). Besides this, you can also use List Comprehension and map () with the lambda function. 1.

Jan 25, 2025 · We can use dictionary comprehension to efficiently add a prefix to each key in the dictionary. Explanation: The dictionary comprehension loops over the key-value pairs using a.items(). For each key k, the prefix "prefix_" is added using an f-string. The result is a new dictionary with updated keys and the original values.

Apr 19, 2025 · Write a Python program to prepend a given prefix to every line in a multi-line string. Write a Python program to split a text into lines, add a prefix to each, and rejoin them with newline characters. Write a Python program to use map() to add a …

Write a Python program to add a prefix text to all of the lines in a string The program uses the textwrap module in Python to process and format text. The text is stored in the para string and has multiple lines and indents.

Jan 28, 2019 · To add a suffix, use DataFrame.add_suffix. A_some_suffix B_some_suffix. This returns a copy of the data. IOW, df is not modified. Adding prefixes is also done with DataFrame.add_prefix. some_prefix_A some_prefix_B. Which also does not modify df. These are good methods if you're trying to perform method chaining: