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One of the most frustrating problems that you may find is the “**TypeError: ‘bool’ object is not callable**” error. What do we say? It is defensive because it is ambiguous and appears frequently when you learn this program. So, we will recommend how to fix this problem effectively. Click the next part to see the method on dealing with it.

## When does it happen?

You have trouble for the following issue:

```
while not cls.isFilled(row,col,myMap):
TypeError: 'bool' object is not callable
```

To know how to fix this problem, let’s see the details while running the program. On the other hand, finding which used code in the block may get invalid. Using “if” first to check, it gets back the right value and “while not” gets this offense. It is identified that the error here in the variable brand itself is “modified” and it is aloof.

Below is the command of the error:

```
def main(cls, args):
...
if cls.isFilled(row,col,myMap):
numCycles = 0
while not cls.isFilled(row,col,myMap):
numCycles += 1
def isFilled(cls,row,col,myMap):
cls.isFilled = True
## for-while
i = 0
while i < row:
## for-while
j = 0
while j < col:
if not myMap[i][j].getIsActive():
cls.isFilled = False
j += 1
i += 1
return cls.isFilled
```

## How to stabilize the “TypeError: ‘bool’ object is not callable” error?

### Method 1:

If you check with the ** “if” function** and find the invalid value, use

**cls.isFilled = True.**The method is being used

**isFilled,**when doing this function, it is replaced by the true value. If you follow our suggestion, the above method disappears and you may not do it again.

Therefore, using the different brand in the variable that you implement for the manner and it will get the valid value.

### Method 2:

Assume that you have a program which you use a function to check whether a number is actually a prime number or not:

```
def prime_number(num):
# Is prime number flag
is_prime = False
# Prime numbers are greater than 1
if num > 1:
# Check for factors
for i in range(2, num):
#If factor is found, set is_prime to True
if (num % i) == 0:
is_prime = True
# break out of the loop
break
return is_prime
```

A list of numbers will be iterated over, and a call to the **prime number** function will be made for each number:

```
lst = [4, 7, 12, 17, 23, 44]
for i in lst:
prime_number = prime_number(i)
print(f'Is {i} Prime? {prime_number}')
```

Then you run your program and an error comes out:

```
Is 4 Prime? False
---------------------------------------------------------------------------
TypeError Traceback (most recent call last)
<ipython-input-10-cb5177ccdebb> in <module>
2
3 for i in lst:
----> 4 prime_number = prime_number(i)
5 print(f'Is {i} Prime? {prime_number}')
TypeError: 'bool' object is not callable
```

```
lst = [4, 7, 12, 17, 23, 44]
for i in lst:
print(type(prime_number))
prime_number = prime_number(i)
print(type(prime_number))
print(f'Is {i} Prime? {prime_number}')
```

```
<class 'function'>
<class 'bool'>
Is 4 Prime? True
<class 'bool'>
---------------------------------------------------------------------------
TypeError Traceback (most recent call last)
<ipython-input-7-5ba50fe7142f> in <module>
3 for i in lst:
4 print(type(prime_number))
----> 5 prime_number = prime_number(i)
6 print(type(prime_number))
7 print(f'Is {i} Prime? {prime_number}')
TypeError: 'bool' object is not callable
```

`prime_number`

won’t be used, instead `is_prime`

will be chosen. You have to ensure that you begin from a new session or determine the `prime_number`

function again if you’re using IPython. Let’s examine the updated code:```
lst = [4, 7, 12, 17, 23, 44]
for i in lst:
is_prime = prime_number(i)
print(f'Is {i} Prime? {is_prime}')
```

```
Is 4 Prime? True
Is 7 Prime? False
Is 12 Prime? True
Is 17 Prime? False
Is 23 Prime? False
Is 44 Prime? True
```

`prime_number`

remains a function for the total lifecycle of program:```
lst = [4, 7, 12, 17, 23, 44]
for i in lst:
print(type(prime_number))
is_prime = prime_number(i)
print(type(prime_number))
print(f'Is {i} Prime? {is_prime}')
```

```
<class 'function'>
<class 'function'>
Is 4 Prime? True
<class 'function'>
<class 'function'>
Is 7 Prime? False
<class 'function'>
<class 'function'>
Is 12 Prime? True
<class 'function'>
<class 'function'>
Is 17 Prime? False
<class 'function'>
<class 'function'>
Is 23 Prime? False
<class 'function'>
<class 'function'>
Is 44 Prime? True
```

**make sure that the variable and function names are separate**and that

**Boolean values are not followed by parenthesis**. Using the

**built-in type()**method, you can determine whether an object is a Boolean or not.

## Conclusion

We hope that you found this post about fixing the “**TypeError: ‘bool’ object is not callable**” issue useful. We know that solving this error can be annoying. Therefore, we hope our simple information will support you in correcting it.

Please leave a comment in the box below if you have any questions or other ideas. Thank you so much for spending the time on reading our post. We are always pleased anytime one of our messages can give useful knowledge on this topic.

**Read more **

**→ How to fix “TypeError: ‘int’ object is not callable” in Python**

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