Typeerror: Not All Arguments Converted During String Formatting Python

TypeError: not all arguments converted during string formatting when trying to find even numbers

Remove [ and ] and split the string:

def is_even_num(l):
  enum = []
  for n in l.replace('[','').replace(']','').split(', '):
    if int(n) % 2 == 0:
       enum.append(n)
  return enum
print(is_even_num('[1, 2, 3, 4, 5, 6, 7, 8, 9]'))

Output:

['2', '4', '6', '8']

Another ellegant way is to use ast:

def is_even_num(l):
  enum = []
  for n in ast.literal_eval(l):
    if int(n) % 2 == 0:
       enum.append(n)
  return enum
print(is_even_num('[1, 2, 3, 4, 5, 6, 7, 8, 9]'))

Output:

['2', '4', '6', '8']

Also for you second part of your question as said before just use ast:

price = "[('item1', '12.20'), ('item2', '15.10'), ('item3', '24.5')]"  
price = ast.literal_eval(price) 
print( sorted(price, key=lambda x: float(x[1]), reverse=True))

Output:

[('item3', '24.5'), ('item2', '15.10'), ('item1', '12.20')]

Then:

y = "[[1,2,3,4],[4,5,6,7]]"
result = [[0,0],
 [0,0],
 [0,0],
 [0,0]]
X = ast.literal_eval(y)
#iterate through rows
for i in range(len(X)):
# iterate through columns
    for j in range(len(X[0])):
        result[j][i] = X[i][j]
for r in result:
  print(r)

Output:

[1, 4]
[2, 5]
[3, 6]
[4, 7]

How to fix 'TypeError: not all arguments converted during string formatting' in Python

digit is a string. Just typecast it using int():

if not int(digit) % 2:

The reason your error is occurring is because the modulus operator is also a string formatting operator, but you haven't provided the necessary arguments to string-format '2'

This for-loop will work:

for digit in masterKeyList:
    if not int(digit) % 2:
        firstKeyList.append(digit)
    else:
        secondKeyList.append(digit)

Type error on Python: not all arguments converted during string formatting

When you use the % operator on a string, the first string needs to have formatting placeholders that will be replaced by the values after %. But you have no %s in the first string.

When you're creating pathnames, you should use os.path.join() rather than string operations.

And f-strings are easier to read than concatenation and str() calls when combining variables with strings.

import os

for _ in range(80):
    for img, label in dataset:
        save_image(img, os.path.join('/media/data/abc', f'img{img_num}.png', normalize=True)
        print(img_num)
        img_num += 1

TypeError: not all arguments converted during string formatting (Python insert datetime into postgres)

Rectifying my previous response after reading comments from @AdrianKlaver and @JohnGordon. There comments should be taken as the correct answer, I am just modifying my response so that future readers do the right thing

cursor.execute("""INSERT INTO table01(start_time_str) VALUES(%s);""", (start_time,))

As @AdrianKlaver and @JohnGordon mentioned, just watch out for the ',' in (start_time,) to pass it as a tuple to the cursor.execute()

Not all arguments converted during string formatting. Why am I having error

You are trying to perform a modulo operation on a string:

"ineuron" % 2

The last element of l list is ["ineuron", "datasience"]. It passes the if statement, and then j becomes "ineuron" and you get an error.

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