All Questions
Tagged with python-3.x string
5,487 questions
1
vote
1
answer
50
views
Why am I getting an empty string if I use positive start index and negative stop and step index values?
I am trying to run this code snippet:
test="test"
print(test[3:-1:-1])
For the slicing, the start index should start from 3 which is inclusive and stop index should be -1 exclusive which ...
- 89
-4
votes
0
answers
28
views
Syntax help: why is my code ignoring my last elif statement? [duplicate]
I am attempting to create a random generator for cat coat patterns and colors.
First, my generator selects a coat pattern. It could be a tabby, a calico etc.
Then from there, it will select the ...
- 1
1
vote
3
answers
66
views
Find str.contains in two large Pandas DataFrames
I have a large pandas DataFrames like below.
import pandas as pd
import numpy as np
df = pd.DataFrame(
[
("1", "Dixon Street", "Auckland"),
("2&...
- 29
0
votes
0
answers
34
views
__str__ in python not respecting escape keys [duplicate]
So I'm learning about object oriented programming and the __str__ method, and I'm finding that when adding things to a list the formatting of the item is different to when I simply print a particular ...
-1
votes
1
answer
41
views
How to include variables in a multiple line string in Python? [duplicate]
For example, I have the following:
first_count = 5000
query = '''
{
students(first: first_count) {
id
firstName
college {
id
name
location
...
- 103
-1
votes
2
answers
101
views
Why does this not print hello at the end but instead the letters are all scrambled
Im tying to create a effect that make the string "hello" gradually appear:
import time
text = "hello"
alphebet = [
"a", "b", "c", "d", &...
-1
votes
1
answer
30
views
splitting a string into workable lists (Python)
I want to be able to turn a user input string into a string list and then modify that list as needed.For example sake I will be useing: (a+b)(b+a). where the final result is list[0]=a+b and list[1]=b+...
- 19
-4
votes
1
answer
54
views
Regex consonant mismatch [closed]
I am trying to use Python and regex to search for words that look in certain defined ways. Can anyone tell me why the following code returns the word "choosy" as part of the output? I ...
0
votes
0
answers
22
views
How to perform something like 'ordered_choice' replacement which returns a single text string when called similar to performance of 'random.choice'?
This question and code attempt is based mainly on the question asked here: random.choice() equivalent in order and here: Python read first and second lines then second lines and third lines
The ideal ...
- 1
1
vote
1
answer
61
views
Replace characters before a number to a new character after the number python
I have some strings look like: *.rem.1.gz and *.rem.2.gz
And I want to replace it into *.1.trim.gz and *.2.trim.gz
The number 1 and number two files are paired with each other, which I want to create ...
- 27
0
votes
1
answer
60
views
Unicode strings in a purely python3 codebase - are these useless? [duplicate]
In the codebase that I'm working on, there seems to be remnants of python2 because a lot of the strings are prefixed with u.
From researching, it looks like this denotes a unicode string, but in ...
- 1,147
0
votes
1
answer
46
views
Find a Substring in String with Boardtools is not working if the string contains special chars
Today I got frustrated. I'm implementing a very simple logic with substring finding; it turned out to be a more complex situation.
Let's consider this small python code:
word_one, word_two = ['(/ %$ss%...
- 499
-1
votes
2
answers
41
views
Why does the str() not work on filter objects?
besthand = "AAAAJ"
besthand = str(filter("J".__ne__, besthand))
why is the type of besthand still a filter object? I've seen that you can use
besthand = "".join(besthand)...
- 3
-2
votes
3
answers
148
views
How can we use Python to extract Arabic words from a string of text? [duplicate]
Suppose that we have a string of text that contains a mixture of English words and Arabic words.
Our goal is to extract the Arabic words and omit or delete all English words.
Input:
The initial Baa’ “...
- 4,614
1
vote
1
answer
85
views
Python 3 process non-printable characters in a unicode string [duplicate]
I'm reading text that contains non-printable characters such as backspaces from a file example.log.
If I'm reading the content of the file in a terminal running cat example.log, I obtain a well ...
- 3,113
0
votes
3
answers
291
views
Multiple substrings in string python within variable check [duplicate]
I have the following code:
check = "red" in string_to_explore
How can I replicate it for multiple substrings?
I tried with:
check = "red|blue" in string_to_explore
but doesn't ...
- 840
-2
votes
2
answers
101
views
How to get a single slash in the string?
Image:
I have the following string: 'To reach the peak \\U0001fa77'
It is clear that the last part is the emoji symbol, but it has to slashes before it, so when I print the string, I get 'To reach ...
-2
votes
1
answer
46
views
When I tried to count the string of translated language (tamil) in Python, it didn't give me the correct count why?
code
I tried to count the string for the name 'KUMAR' with length function, output came 5 it is correct.
But when I tried to count the same name in a different language(Tamil) the output I expected ...
- 1
0
votes
0
answers
45
views
Regular expression matching variable at end of string
I have some histograms in a .root file which are called "Name/NameEvent1Ch0", "Name/NameEvent1Ch1"... "Name/NameEvent1Ch31" ... "Name/NameEvent2Ch0"... "...
- 391
0
votes
0
answers
41
views
Single quotes being swapped for double quotes upon replace
I have a pandas DataFrame that looks like this
orig_id modified_id original_term modified_term
1929 3668340 3578283 Advocate for clients'' needs. Advocate for ...
- 5,141
0
votes
0
answers
38
views
Formatting multiplication tables in python; not how to, just some explanation
I'm meant to make a multiplication table in Python using nested loops. I had trouble formatting it to make a table and looked for answers online. I came across a solution:
uplim=int(input("What ...
- 11
0
votes
3
answers
64
views
Print separate word string horizontally
I'm beginner just start learning python and this is really confusing me because i want to test practicing using string.
The output should be like above. The spacing between two columns is one tab.
- 11
-1
votes
2
answers
39
views
Looping through string - Adding and skipping characters
I have the below code (which is wrong) and i would like to count the number of times the word "car" appears. So the output here would be 2.
word="cccccccaaaaaaaaaaarrrrrccar"
count=...
- 87
1
vote
1
answer
80
views
Get a list of replacement fields from a Python string
I have a string like this:
my_str = '{one}, {two}, {three}'
print(my_str.format(one=1, two=2, three=3)) #1, 2, 3
I would like a list of replacement fields in my string:
get_replacement_fields(my_str) ...
- 135
-1
votes
1
answer
49
views
Index out of range error on Leetcode problem no 17
can anyone tell me why i am getting an IndexError in the following code. It doesn't make any sense to me.
class Solution(object):
def letterCombinations(self, digits):
matchnums={
&...
0
votes
1
answer
42
views
Turning infix notation to prefix notation has problems in formatting (Python)
I'm trying to create a program that turns infix notation to prefix notation, regardless of what kind of number the user inputs(like it could be a variable like A B or am integer like 3 34 23) here's ...
- 11
0
votes
2
answers
102
views
Convert tree-like structure formatted as a string using indentations to a list of paths
I have a string like this:
Given_String = """\
Shoes
Fruits
Red
Apple
Cherry
!
Yellow
Banana
Grapes
Small
Big
!
!
!
"""
I want to convert it into a ...
0
votes
1
answer
50
views
Why python allocate memory to string is different strategy?
String type uses Unicode representation. Unicode string can take up to 4 bytes per character depending on the encoding.
I have know python use three kinds of internal representations for Unicode ...
1
vote
1
answer
82
views
Replacing html tags around some text, with plotly/dash html components
I have an html file, the content is a table such as:
<tr>
<td>
<p>Item 1</p>
</td>
<td>
<p>Definition for Item ...
- 31
0
votes
1
answer
43
views
Convert String format to another format in Python
I extract a string a python file, the string is like this.
string = "'Interest Rate <b>%.2f</b> of <b>%.2f</b> can not change to <b>%s</b> of new loan product &...
- 1,715
1
vote
4
answers
120
views
Python - Removing special characters and adding numbers from String
I have the below code. There is a string with special characters and numbers. I try to remove the special characters and calculate the sum of the numbers in the string. I get error when i try to ...
- 87
0
votes
1
answer
39
views
Conversion of hexadecimal value represented as string into int in column in dataframe
I am working on a dataset where two of its attributes sport and dport have hexadecimal values such as 'Ox0303' and 'Ox5000' along with integer values. The datatype of these attributes is object type. ...
0
votes
2
answers
154
views
TypeError: can't concat str to bytes. It does not look any byte object around. python3
"TypeError: can't concat str to bytes" pops out at read(1) statement in following code.
def __init__(self, infile):
self.infile = infile
while self.infile.read(1) != 'T':
...
- 3
-2
votes
2
answers
72
views
How to split a string into list of combinations
Given a string like /root/2/1/2, how do we construct the following list:
['/root/2/1/2', 'root/2/1', 'root/2', '/root']
- 442
1
vote
1
answer
66
views
How do I check if one column value contains another column value and vice versa - Pandas
I'm working with string columns on a pandas dataframe and would like to check if I can check if one of 2 columns contains the string in the match column (& check both ways)
Column1 | Column2 ...
- 115
0
votes
2
answers
99
views
How can I make user entries case-insensitive in Python 3? [duplicate]
I am following FreeCodeCamp's Python tutorial. I would like to know how I can make user entries case-insensitive.
Here is the example code.
month_conversions = {
"Jan": "January&...
0
votes
1
answer
153
views
Jupyter notebook giving syntax error to codes
Greeting everyone
Please what could be responsible for Jupyter notebook outputting Name error messages to my lines of codes it had correctly run just some moments ago? Please someone should assist me.
...
- 1
-2
votes
3
answers
60
views
Cannot convert string variable to raw
I have seen few examples on how to convert string variable to raw one using interpolation, but it doesn't work for me:
import json
j = '{"value": "{\"foo\": \"bar\"}...
- 11.7k
-1
votes
1
answer
71
views
How to read a string value from a dict that has special character forwardslash in python
I have an input coming as dict and assigned it to variable 'var_1'
input:
{
"key_1":"value_1",
"key_2":"12345/6789-0ab1"
}
Assigning input to a ...
- 75
0
votes
3
answers
94
views
How do I convert a normal string in another format?
How do I convert a normal string in another format using Python script?
For exp: a normal "String" into BOLD "String" or other format fonts!
I tried with these two modules but ...
- 21
-1
votes
1
answer
76
views
Learning python Python TypeError: not enough arguments for format string [duplicate]
I am new to python and trying to learn the basic
just learned how to format string today and couldn't figure out what is wrong with this line of codes
data = ["Zac", "poor fella", ...
- 3
0
votes
1
answer
71
views
Can someone help me understand this bit of string formatting?
I was trying a coding challenge and gave up, in the submitted answers for others I found this string formatting method.
number = 10
for i in range(1, number+1):
print("{0:{w}d} {0:{w}o} {...
-3
votes
5
answers
468
views
how can I find the position of the last LETTER in a string in python?
I want to include a function in my code that can return the position in the string that the last letter in the string can be found.
e.g: if the input were " hello world k ...^&", the ...
-2
votes
1
answer
160
views
Format string with substrings
I need to format a string with substrings of a variable. If I do:
sample="1234567890XXXX"
f"{sample[:5]}/{sample[5:10]}/{sample}/config"
It works fine:
'12345/67890/1234567890XXXX/...
- 165
0
votes
1
answer
58
views
Python Pandas: Confirm if a substring of DataFrame A is part of a string in DataFrame B
I have two dataframes:
import pandas as pd
countries_list_a = pd.DataFrame({'Country' : ['Australia', 'United Kingdom', 'United States'], 'Code' : ['A', 'B', 'C']})
countries_list_b = pd.DataFrame ({...
-2
votes
5
answers
428
views
Python Nested lambda function
Would there be a way to write a nested lambda function? The following is what I am trying to do:
s = '123 there'
f = lambda x: x.split()
g = lambda x: [int(x[0]), x[1]]
#g(f(s)) returns [123, 'there']...
- 210
-3
votes
1
answer
79
views
Could you please explain below three codes?, why they are giving different results
code 1
list_a = []
list_a += str(1)
O/P:
['1']
code 2
list_a = []
list_a += 1
O/P:
Type Error
code 3
list_a = []
list_a = list_a + str(1)
O/P:
Type Error
I'm expecting that if += operator ...
0
votes
3
answers
107
views
Find and delete/replace a part of bigger string
In my python/Django project, I am trying to write a custom exception class where I want to avoid showing few things to the end user.
In the below error message, if you see the project name prj-eng-d-...
- 3,345
2
votes
2
answers
66
views
How to get the callable function defined by exec() in Python?
Say I want to have a function exec_myfunc that can execute any user-defined function with an input value of 10. The user is supposed to define the function by a string as shown below:
func1_str = &...
- 2,785
-1
votes
2
answers
118
views
Is there a way to search from the back of a string in python using regex or any similar method?
I have text that can take multiple different forms with dashes in them. Examples:
"'Super-rainbow' time to fight - 22-50t", "'m-m-m' title destroyer - 20t", "'eating food' ...
