Clone or copy a list in Python

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Saved by @bravocoder #python

newlist = old_list.copy()

https://stackoverflow.com/questions/3277503/how-to-read-a-file-line-by-line-into-a-list

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Clone or copy a list in Python

Getting the index of an item in a list containing it in Python

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Convert two lists into a dictionary

keys, values)) # {'a': 2, 'c': 4, 'b': 3}
 
 
#make a function: def is the keyword for the function:
def to_dictionary(keys, values):
 
 
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values = [2, 3, 4]

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while day < 7:
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Sync/copy data from source to destination using rsync and multiprocessing

#!/usr/bin/env python
import subprocess
from multiprocessing import Pool
import os

src = "/home/student-03-474f458f89e0/data/prod"
dest = "/home/student-03-474f458f89e0/data/prod_backup"

def run_sync(file):
    print(os.path.join(dest,file))
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if __name__ == "__main__":
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my_list = [27, 5, 9, 6, 8]

def RemoveValue(myVal):
    if myVal not in my_list:
        raise ValueError("Value must be in the given list")
    else:
        my_list.remove(myVal)
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import pandas as pd

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>>> from enum import Enum
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Forward fills Column names

def ffill_cols(df, cols_to_fill_name='Unn'):
    """
    Forward fills column names. Propagate last valid column name forward to next invalid column. Works similarly to pandas
    ffill().
    
    :param df: pandas Dataframe; Dataframe
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    for i, j in enumerate(cols):
        if j.startswith(cols_to_fill_name):
            cols[i] = cols[i-1]
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#python #python #dictionary #mergedictionary #dict

Merge two dictionaries

 
def merge_two_dicts(a, b):
 
 
   c = a.copy()   # make a copy of a
 
   c.update(b)    # modify keys and values of a with the ones from b
 
   return c
 
 
 
 
 
a = { 'x': 1, 'y': 2}
 
b = { 'y': 3, 'z': 4}
 
 
print(merge_two_dicts(a, b)) # {'y': 3, 'x': 1, 'z': 4}

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Returns the maximum value of a list in Python

def max_by(lst, fn):
  return max(map(fn, lst))

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