1.0.2rc4 catch IPython not installed

Author: gutow

Demonstration of equation class.ipynb

@@ -28,7 +28,7 @@
      "name": "stdout",
      "output_type": "stream",
      "text": [
-      "This notebook is running Algebra_with_Sympy version 1.0.1.\n"
+      "This notebook is running Algebra_with_Sympy version 1.0.2rc4.\n"
      ]
     }
    ],
@@ -4164,7 +4164,7 @@
     {
      "data": {
       "text/plain": [
-       "'1.0.1'"
+       "'1.0.2rc4'"
       ]
      },
      "execution_count": 167,
@@ -4184,7 +4184,7 @@
     {
      "data": {
       "text/plain": [
-       "'1.0.1'"
+       "'1.0.2rc4'"
       ]
      },
      "execution_count": 168,

ReadMe.md

@@ -16,7 +16,7 @@ This tool defines relations that all high school and college students would
 recognize as mathematical equations. 
 They consist of a left hand side (lhs) and a right hand side (rhs) connected by
 the relation operator "=". In addition, it sets some convenient defaults and 
-provides some useful controls of output formatting that may be useful even if
+provides some controls of output formatting that may be useful even if
 you do not use the `Equation` class (see [Conveniences for
 SymPy](#convenience-tools-and-defaults-for-interactive-use-of-sympy)).
 
@@ -41,9 +41,9 @@ The last cell illustrates how it is possible to substitute numbers with
 units into the solved equation to calculate a numerical solution with 
 proper units. The `units(...)` operation is part this package, not Sympy.
 
-In IPython environments (IPython and Jupyter) there is also a shorthand 
-syntax for entering equations provided through the IPython preparser. An 
-equation can be specified as `eq1 =@ a/b = c/d`.
+In IPython environments (IPython, Jupyter, Google  Colab, etc...) there is 
+also a shorthand syntax for entering equations provided through the IPython 
+preparser. An equation can be specified as `eq1 =@ a/b = c/d`.
 
 
 ![screenshot of short syntax](https://gutow.github.io/Algebra_with_Sympy/resources/short_syntax.png)
@@ -154,7 +154,7 @@ github](https://github.com/gutow/Algebra_with_Sympy/issues).
 
 ## Change Log
 
-* 1.0.2 (July 4, 2024)
+* 1.0.2 (July 5, 2024)
   * Removed requirements for Jupyter and Jupyterlab as code will work in 
     vanilla python or Google Colab.
   * Workaround for Google Colab's inconsistent handling of mixed Latex and 

algebra_with_sympy/__init__.py

@@ -6,10 +6,14 @@
 from algebra_with_sympy.algebraic_equation import *
 
 # Set up numerics behaviors
-from IPython import get_ipython
-if get_ipython():
-    get_ipython().input_transformers_post.append(integers_as_exact)
-    algwsym_config.numerics.integers_as_exact = True
+try:
+    from IPython import get_ipython
+
+    if get_ipython():
+        get_ipython().input_transformers_post.append(integers_as_exact)
+        algwsym_config.numerics.integers_as_exact = True
+except ModuleNotFoundError:
+        pass
 
 from algebra_with_sympy.preparser import *
 

algebra_with_sympy/algebraic_equation.py

@@ -389,8 +389,12 @@ def integers_as_exact(self):
             return self.integers_as_exact
 
 def __latex_override__(expr, *arg):
+    algwsym_config = False
+    ip = False
     try:
         from IPython import get_ipython
+        if get_ipython():
+            ip = True
     except ModuleNotFoundError:
         pass
     colab = False
@@ -401,7 +405,7 @@ def __latex_override__(expr, *arg):
         pass
     show_code = False
     latex_as_equations = False
-    if get_ipython():
+    if ip:
         algwsym_config = get_ipython().user_ns.get("algwsym_config", False)
     else:
         algwsym_config = globals()['algwsym_config']
@@ -492,17 +496,20 @@ def set_integers_as_exact():
     mode of algebra_with_sympy. To turn this off call
     `unset_integers_as_exact()`.
     """
+    ip = False
     try:
         from IPython import get_ipython
+        ip = True
     except ModuleNotFoundError:
-        pass
-    if get_ipython():
-        get_ipython().input_transformers_post.append(integers_as_exact)
-        algwsym_config = get_ipython().user_ns.get("algwsym_config", False)
-        if algwsym_config:
-            algwsym_config.numerics.integers_as_exact = True
-        else:
-            raise ValueError("The algwsym_config object does not exist.")
+        ip = False
+    if ip:
+        if get_ipython():
+            get_ipython().input_transformers_post.append(integers_as_exact)
+            algwsym_config = get_ipython().user_ns.get("algwsym_config", False)
+            if algwsym_config:
+                algwsym_config.numerics.integers_as_exact = True
+            else:
+                raise ValueError("The algwsym_config object does not exist.")
     return
 
 def unset_integers_as_exact():
@@ -516,22 +523,25 @@ def unset_integers_as_exact():
     starts with `set_integers_as_exact()` enabled (
     `algwsym_config.numerics.integers_as_exact = True`).
     """
+    ip = False
     try:
         from IPython import get_ipython
+        ip = True
     except ModuleNotFoundError:
-        pass
-    if get_ipython():
-        pre = get_ipython().input_transformers_post
-        # The below looks excessively complicated, but more reliably finds the
-        # transformer to remove across varying IPython environments.
-        for k in pre:
-            if "integers_as_exact" in k.__name__:
-                pre.remove(k)
-        algwsym_config = get_ipython().user_ns.get("algwsym_config", False)
-        if algwsym_config:
-            algwsym_config.numerics.integers_as_exact = False
-        else:
-            raise ValueError("The algwsym_config object does not exist.")
+        ip = False
+    if ip:
+        if get_ipython():
+            pre = get_ipython().input_transformers_post
+            # The below looks excessively complicated, but more reliably finds the
+            # transformer to remove across varying IPython environments.
+            for k in pre:
+                if "integers_as_exact" in k.__name__:
+                    pre.remove(k)
+            algwsym_config = get_ipython().user_ns.get("algwsym_config", False)
+            if algwsym_config:
+                algwsym_config.numerics.integers_as_exact = False
+            else:
+                raise ValueError("The algwsym_config object does not exist.")
 
     return
 
@@ -557,16 +567,17 @@ def units(names):
     """
     from sympy.core.symbol import symbols
     #import __main__ as shell
+    user_namespace = None
     try:
         from IPython import get_ipython
+        if get_ipython():
+            user_namespace = get_ipython().user_ns
     except ModuleNotFoundError:
         pass
     syms = names.split(' ')
-    user_namespace = None
     retstr = ''
-    if get_ipython():
-        user_namespace = get_ipython().user_ns
-    else:
+
+    if user_namespace==None:
         import sys
         frame_num = 0
         frame_name = None
@@ -703,7 +714,6 @@ def solveset(f, symbols, domain=sympy.Complexes):
     equations unless you directly select `linsolve`, etc...
     """
     from sympy.solvers import solveset as solve
-    from IPython.display import display
     newf = []
     solns = []
     displaysolns = []

version.py

@@ -1 +1 @@
-__version__ = '1.0.2rc1'
+__version__ = '1.0.2rc4'