So I have this data that list of True and False for example
tf = ['True', 'False', 'False']
how can I convert tf to a bool. Once I print(tf[0]) it prints
True
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4 Answers
Use the ast module:
import ast
tf = ['True', 'False', 'False']
print(type(ast.literal_eval(tf[0])))
print(ast.literal_eval(tf[0]))
Result:
<class 'bool'>
True
Comments
Simply use a dictionary to map the strings and boolean values
tf = ['True', 'False', 'False']
toBool = {'True':True,'False':False}
print(toBool[tf[0]])
Comments
You can compare each element of the tf list with True or False
for idx, val in enumerate(tf):
if val == "True":
tf[idx] = True
else:
tf[idx] = False
1 Comment
bereal
tf = [val == 'True' for val in tf]you can use: eval(tf[0]) for that task.
5 Comments
bereal
bool('False') also returns True.
YJR
Yeah my mistake. Now I updated. This work
Klaus D.
Never use
eval() on data!YJR
If I am wrong plz correct me. We do not use eval because it can cause injections from malicious users right? Are there any other reasons. Asking this for just learn.
Matthias
@YJR Correct. And for me it often makes the code harder to read.