When i develop python source code, i want to use python built-in function str() to conver a number variable to string type. But i meet below error Typeerror: ‘str’ Object Is Not Callable.
>>> x = 1.99 >>> >>> str(x) Traceback (most recent call last): File "<stdin>", line 1, in <module> TypeError: 'str' object is not callable
This error confused me a lot for some time. But i finally fix it after google it. The reason for this error is because i had use a variable name str in the same python interpreter, and i had assign string value to that variable str. So the python interpreter treat str as a variable name other than built-in function name str(). So it throw out TypeError: ‘str’ object is not callable. Below is the full python source code.
>>> global str >>> # some times ago, i assign string 'hello' to str variable, so python interpreter think str is a string variable. >>> str = 'hello' >>> ...... ...... ...... >>> x= 1.99 # so when i invoke str() function, the interpreter think str is a string variable then error happened. >>> str(x) Traceback (most recent call last): File "<stdin>", line 1, in <module> TypeError: 'str' object is not callable
Conclusion : Do not declare python variable name same with python built-in function name, keyword etc.
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but how did you fix it?? will the interpreter continue thinking str as a variable
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try to run below and retry the code
del str
it will work now.
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try to run below and re try the code
del str
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Hello, I do not even have any str variables and it still gives me Type error.
My code:
haracters = [‘a”b”c”d”e”f”g”h”i”j”k”l”m”n”o”p”q”r”t”u”v”w”x”y”z’]
numbers = [‘1”2”3”4”5”6”7”8”9”10”11”12”13”14”15”16”17”18”19”20”21”22”23”24’]
input = input(‘Write Text: ‘)
input = input.lower()
output = []
for character in input:
number = ord(character) – 96
output.append(number)
print(output)
MAX = 100
# Function to print Matrix
def printMatrix(M, rowSize, colSize):
global row1
for i in range(rowSize):
for j in range(colSize):
print(M[i][j], end = ” “)
print()
# Function to multiply two matrices
# A[][] and B[][]
def multiplyMatrix(row1, col1, A,
row2, col2, B):
# Matrix to store the result
C = [[0 for i in range(MAX)]
for j in range(MAX)]
# Check if multiplication is Possible
if (row2 != col1):
print(“Not Possible”)
return
# Multiply the two
for i in range(row1):
for y in range(col2):
C[i][j] = 0
for k in range(row2):
C[i][j] += A[i][k] * B[k][j]
# Print the result
print(“Resultant Matrix: “)
printMatrix(C, row1, col2)
# Driver Code
if __name__ == “__main__” :
A = [[0 for i in range(MAX)]
for j in range(MAX)]
B = [[0 for i in range(MAX)]
for j in range(MAX)]
# Read size of Matrix A from user
row1 = int(input(‘Enter the number of rows of First Matrix: ‘))
col1 = int(input(“Enter the number of columns of First Matrix: “))
# Read the elements of Matrix A from user
print(“Enter the elements of First Matrix: “)
for i in range(row1):
for j in range(col1) :
A[i][j] = int(input(“A[” + str(i) +
“][” + str(j) + “]: “))
# Read size of Matrix B from user
row2 = int(input(“Enter the number of rows of Second Matrix: “))
col2 = int(input(“Enter the number of columns of Second Matrix: “))
# Read the elements of Matrix B from user
print(“Enter the elements of Second Matrix: “);
for i in range(row2) :
for j in range(col2) :
B[i][j] = int(input(“B[” + str(i) +
“][” + str(j) + “]: “))
# Print the Matrix A
print(“First Matrix: “)
printMatrix(A, row1, col1)
# Print the Matrix B
print(“Second Matrix: “)
printMatrix(B, row2, col2)
# Find the product of the 2 matrices
multiplyMatrix(row1, col1, A, row2, col2, B)