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If you just want a default value, "" is probably better, because its actually a string, and you can call string methods on it. If you went with None, these would lead to exceptions. If you wish to indicate to future maintainers that a string is required here, "" can help with that. Complete side note: If you have a loop, say:
The best and most convenient method for creating a string array in python is with the help of NumPy library. Example : import numpy as np arr = np.chararray((rows, columns))
Oct 29, 2019 · If associated string values are valid Python names then you can get names of enum members using .name property like this: from enum import Enum class MyEnum(Enum): state1=0 state2=1 print (MyEnum.state1.name) # 'state1' a = MyEnum.state1 print(a.name) # 'state1' If associated string values are arbitrary strings then you can do this:
Apr 9, 2023 · If you have problems with some names you can also try raw string literals: r'C:\mydir' However, the best practice is to use the os.path module functions that always joins with the correct path separator (os.path.sep) for your OS: os.path.join(mydir, myfile) From python 3.4 you can also use the pathlib module. This is equivalent to the above:
Apr 12, 2012 · You can use Python 3.6's f-strings for variables inside multi-line or lengthy single-line strings. You can manually specify newline characters using \n.
For ordinary functions and methods, like input, or the savefig method of Matplotlib plots, we need to prepare a string ourselves. Concatenation. Python supports using + between two strings, but not between strings and other types. To work around this, we need to convert other values to string explicitly: 'hanning' + str(num) + '.pdf'.
Jul 8, 2010 · The rule of thumb for repr is that if it makes sense to return Python code that could be evaluated to produce the same object, do that, just like str, frozenset, and most other builtins do, but if it doesn't, use the angle-bracket form to make sure that what you return can't possibly be mistaken for a human-readable-and-evaluatable-as-source repr.
Feb 19, 2010 · From the Python manual. string.find(s, sub[, start[, end]]) Return the lowest index in s where the substring sub is found such that sub is wholly contained in s[start:end]. Return -1 on failure. Defaults for start and end and interpretation of negative values is the same as for slices. And: string.index(s, sub[, start[, end]])
The simplest thing is to use python's triple quotes (note the three single quotes) stringtowrite = '''abcd || efgh|| iklk''' any string literal with triple quotes will continue on a following line. You can use ''' or """. By the way, if you have. a = abcd b = efgh c = iklk I would recommend the following:
Aug 15, 2017 · text = ''' This string was typed to be a demo on how could we write a multi-line text in Python. If you want to remove annoying blank spaces in each line, you could do as follows: text = '\n'.join(line.lstrip() for line in text.splitlines())
