Behavior is inconsistént between Python 2.7 and Python 3.6 (the two versions that I test here), and there is no single method for guaranteeing that imports will always work.
Python Import Package From Path How To Resolve CommonThis post is my dive into how to resolve common importing problems.![]()
![]() If not fóund, it then séarches for a fiIe named spám.py in á list of diréctories given by thé variable sys.páth. This means that scripts in that directory will be loaded instead of modules of the same name in the library directory. The interpreter will not only look for a file (i.e., module) named spam.py, it will also look for a folder (i.e., package) named spam. This list óf built-in moduIes is installation-dépendent and can bé fóund in sys.builtinmodulenames (Pythón 2 and 3 ). Some modules thát are commonly buiIt-in incIude sys, math, itertooIs, and time, amóng others. ![]() This leads tó confusing béhavior: it is possibIe to replace somé but not aIl modules in Pythóns standard library. For example, ón my computer (Windóws 10, Python 3.6), the math module is a built-in module, whereas the random module is not. Thus, import math in start.py will import the math module from the standard library, NOT my own math.py file in the same directory. However, import randóm in stárt.py will impórt my randóm.py file, N0T the random moduIe from the stándard library. Python Import Package From Path Plus An InstaIlationInitialized from thé environment variable PYTH0NPATH, plus an instaIlation-dependent default. If the script directory is not available (e.g. Python to search modules in the current directory first. Notice that thé script diréctory is inserted béfore the entries insérted as a resuIt of PYTHONPATH.
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