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Every time I open a Python file PyCharm will hide all imports and shows:
import ... within the editor.
I have to manually unfold it to see the imports. Where do I find the setting to undo auto-hiding of import statements?
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The module easygui is imported and is used for nothing. So PyCharm tells you that the module is unused, not unsuccessfully imported. If you use the module in another piece of code, the grey line will disappear: import easygui easygui.
To fold or unfold a code fragment, press Ctrl+NumPad - / Ctrl+NumPad + . PyCharm folds or unfolds the current code fragment, for example, a single method. To collapse or expand all code fragments, press Ctrl+Shift+NumPad - / Ctrl+Shift+NumPad + .
It maps alt+1 to fold the first python indent level (class definitions and functions), alt+2 to fold the second level (class methods), and alt+0 to unfold everything. It makes sure it only folds one level and doesn't fold any of the nested sub levels. You can still use za to toggle folding for the current block.
As this question may be useful for people who also are not looking for the term "code folding", I'll make my comment an answer.
As extracted from IntelliJ IDE Web Help, but also worked on PyCharm CE 3.4.1:
The image below shows what it looks like:
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